Who vs. Who Again?
So, now that we're all comfortable with the fact that meat is good for you, let's take another look at that question. Are vegetarians healthier? In many cases, no, they're not. Here are just a few:
In my book, I spoke with several physicians about the role meat plays in the health of the human body. And of course they all agreed that, in moderation and as part of a balanced diet and active lifestyle, it's a good thing. But what about all those worries that eating red meat with inevitably lead to hypertension, cholesterol problems and heart disease? Won't eating meat kill you? Turns out, as far as things to worry about go, having a roast beef sandwich is pretty far down on the list. One of the most important factors to consider regarding one's health, according to internist Dr. Rian Tannenbaum, isn't your lunch, but your genes. He told me the story of a fellow doctor who, by all appearances, was the portrait of healthy living: a marathon runner, a teetotaler, a strict vegetarian, etc. Then one day, feeling ill, he had himself checked out. Turns out, despite doing everything we're supposed to do to be a vibrant, healthful person, he had multiple plaques in his arteries caused by ragingly out-of-control cholesterol. After a couple of surgeries and a new regimen of statin drugs, those levels came down and he was fine. And he started eating meat. You know why? Because it wasn't his dietary choices that caused his health woes...it was his family tree. So: when he was a vegetarian, was he healthier than, say, a person of similar age and lifestyle who happened to eat meat, but didn't share this poor guy's genetic predisposition for cholesterol problems?
Not on your life.
Next, consider that not everyone can be a vegetarian. And yes, I mean
that literally. Speaking of genetic predispositions, some people are
part of an ethnicity that has subsisted on meat for thousands of years,
and for good reason. Take Tibetans, for example. In the upper
Himalayas, they're not able to grow very much outside of barley. So
their diet consists mainly of tsampa (barley flour that's usually mixed
with water and either eaten as raw dough or baked into bread), and yak
products. Yak's milk, yak butter, yak cheese, and, naturally, yak
meat. Now, you might know that most Tibetans are Buddhist, a religion
that values life and compassion above all, and yet, in an interesting
twist, most of them can't survive without having meat in their diet.
Many try to become vegetarians, since they see it as karmically preferable. Like his Holiness, the Dalai Lama, who tried to cut out the meat, but soon became ill. His doctors said that he needed to nosh a little beef lamb now and then to stay healthy, which he does to this day.
Now look to Africa. Some friends of mine run a wonderful non-profit organization helping schoolchildren in a particularly poor area of Tanzania. They're lovely, giving people, but they don't have much to eat, mostly beans and rice, which is one of the world's cheapest complete proteins. Still, they occasionally suffer from malnutrition, and as a whole, they're very small of stature (a sign of insufficient nutrition during development). Across the way, you have the Masai, who cherish beef cattle, which they cherish and use as currency. They eat mostly beef, and you know what? They're very strong. And very tall. It doesn't take a genius to see, between these two groups of people, which ones are healthier. Score another one for the carnivores.
Finally, it must be said that not every vegetarian is the Platonic ideal of health. I've known a number of them, most of them my friends, who didn't exercise, drank like fish, smoked cigarettes and weed, and ate mostly pizza and cheese fries. Naturally, they were overweight and out of shape. Were they healthier than someone like me, who works out regularly and has a balanced diet that included turkey sandwiches and salad with roasted chicken breast? No. Which is to say "no, duh." And then there are the former vegans whom I've known, who complained that, in their vegan days, they appear pale and undernourished, and that they picked up cold viruses with alarming frequency and regularity. That, and they were constantly hungry. All this despite their every effort to balance their diets. When they returned to omnivorism, these symptoms mysteriously vanished.
There you have it: Three cases where vegetarians are definitely not healthier.

Regarding your first point: that is actually not a very good pro meat argument. The physicians you asked said meat in moderation can be healthy, but in our culture meat is almost always eaten to great excess: 400% of needed intake in most diets. Therefore according to your first point, one should cut meat in take to the healthier 1-2 servings per week, which is what most physicians would argue is the healthy intake.
Your second point: genes. That is very true: a great part of human health is disease dependent. That however does not negate that another great part is life-style dependent. The thing is, we cannot change our genes, but we can change our style. So, rather than letting genes decide all of our health, we can improve the part that we can change by choosing a better diet, an active life, and a healthier life-style.
Your third point: not everyone can be a vegetarian . Fortunately that does not apply to most readers and posters on this site, i.e. to people living in the western world. We do have a choice, and not only that, we should make one.
Your fourth point does not negate that veganism is healthier than a meat diet, because you do not provide two comparable examples. You compare people who are vegan but do everything else unhealthily, to you who are not vegan but other than that follow a very healthy life style. Of course veganism alone is not enough to reach optimal health. It does help greatly, but exercise, a moral and positive life-style, and other factors contribute as well.
To the health argument for veganism I would add four, even stronger arguments. It's also good for the planet, for animals, for society, and for your wallet. Good for the planet because vegans contribute to lowering green-house emissions, which represent 17% of green-house gases causing the climate change in our planet. Good for the planet also because vegans decrease water and energy consumption, two scarce resources, for it takes much less water and energy to grow plants than animals. Good for animals because vegans reduce animal abuse, which is not justifiable. For those who try to lose weight, a vegan diet can help greatly, and let's not forget, the number one cause of death in our society is obesity. Add to that the fact that a vegan diet is usually cheaper. Now my question is, really, why are you still eating meat? Is it just to prove your point?
Diet is only one factor. Even vegans should exercise!
Three cases does not a compelling argument make.
The studies show - over and over again - that vegetarians and vegans tend to be just as healthy or more healthy than their meat-eating counterparts. Certainly, there are counter-examples to any real life argument, but ultimately, vegetarianism and veganism is a healthy choice.
You're right, even vegetarians and vegans should exercise. You're right, even vegetarians and vegans should avoid excess sugar, alcohol, and other unhealthy substances. You're right, even vegetarians and vegans can be genetically predisposed to some diseases. However, vegetarianism and veganism are is still very healthy choices!
Go vegan. Not only will your body thank you, but your conscience will too :)
..But non-domesticated animals do not care whether you live or die. Many want to kill you and some will eat you if your dead. Maybe roadkill doesn't look good to you now but try scavenging in the wild for a time. Most of those veggies have very few calories and almost no protein (a necessity). Then see how good an animal looks.
vegetarians easily get enough protein and calories. If anything, Americans eat far too many calories and protein.
Vegetarians get plenty of protein from legumes and whey. Anything that is poisonous raw (beans) or is shown to cause cancer (dairy) can't be too healthy.