Americans are abandoning religion in droves, continuing a trend that has persisted over decades. Between 2007 and 2014, the number of Americans who didn't identify with any religion jumped from 36.6 million to 55.8 million, according to Pew Research Center.

New data from a Pew survey of 1,300 non-religious people published Wednesday provides deeper insight into what is driving this phenomenon, as told by the non-religious themselves.

When asked why they don't identify with any religion, a majority of respondents — 60 percent — said that they question a lot of religious teachings (respondents were allowed to give multiple answers). Forty-nine percent said they opposed the positions taken by churches on social and political issues, which should be unsurprising given that the nation's younger cohort skews liberal and churches are seen as largely conservative institutions.

Only 37 percent gave not believing in God as their reason for rejecting religion, highlighting the fact that many non-believers do not necessarily identify as atheists or even as agnostics. Forty-one percent said that don't like religious organizations, while 36 percent said religion is irrelevant to them and 34 percent said they dislike religious leaders.

"Those who identify as atheist, agnostic or 'nothing in particular' tend to give different reasons for their lack of affiliation, showing that nones' are far from a monolithic group," wrote Pew research associate Becka Alper. "For example, about nine-in-ten self-described atheists (89%) say their lack of belief in God is a very important reason for their religious identity, compared with 37% of agnostics and 21% of those in the 'nothing in particular' category. Atheists also are more likely than other 'none' to say religion is simply 'irrelevant' to them (63% of atheists vs. 40% of agnostics and 26% of adults with no particular religion)."

Previous Pew research has found that the shift away from religion has a very broad base. The trend persists across genders, generations, and racial groups. However, the about two-thirds of those who identify as agnostic or atheist are white men with higher levels of education.

Overall, though, atheists and agonistics make up a minority of the non-religious, with a majority saying they're just nothing in particular with regard to religion.

"At the same time, however, a significant minority of 'nones' say that religion plays a role in their lives," wrote Michael Lipka, an editorial manager at Pew. "Indeed, about 7% of U.S. adults say their religion is 'nothing in particular' but also say that religion is 'very' or 'somewhat' important in their lives, despite their lack of a formal affiliation."