A new poll says that 25 percent of unchurched Americans are atheists or agnostics.
The numbers come from the Barna Group's 2015 study on atheism in the U.S.
According to the study, the main reasons people don't believe in God is a lack of trust in churches, rejection of the Bible and a "cultural reinforcement of a secular worldview."
The Barna Group surveyed 23,000 churched and unchurched (who have not gone to church in the past six months) Americans. Most of the unchurched identified themselves as non-practicing Christians.
The study found that 34 percent of all skeptics (agnostics or atheists) are younger than 30, and half have of them have a college degree.
David Kinnaman, president of Barna Group, said in statement:
The data show that some cities—and younger generations—are more gospel-resistant than others. It is increasingly common among Millennials to dismiss religion, God, churches, authority and tradition. For years, some observers have claimed colleges and universities are a breeding ground for anti-God sentiment. The data does lend support to the notion that college campuses are comfortable places for young people to abandon God and assume control of their own lives.
A new documentary "When God Left The Building" (video trailer below) examines the decline of church attendance in America and how churches have been slowly dying out since the 1970s.