In my experience more young people don't 'get' what's wrong with homosexual marriage or marijuana, but are more likely to be pro-life atheists and to oppose multiculturalism.Reading this, I instinctively googled "percentage of atheists pro-life" and was somewhat surprised to find scant quantitative treatment of the question, just links to topical forum threads and organizations for those maintaining the position.
Defining the politically charged phrases "pro-life" and "pro-choice" is difficult to do, with questions about pregnancy complications, rape, and the like clouding things up. The line has to be drawn somewhere, though, so for the sake of this post, that defining line will be whether or not a woman should be able to receive an abortion if she wants one, the specific reasons for her desiring one being irrelevant.
The following table shows the percentages of atheists, agnostics, those who believe but with reservations, and firm believers who are thus pro-life. For contemporary relevance, all responses are from 2000 onward:
Just fewer than one-in-three atheists and agnostics are pro-life (keeping in mind that the definition of pro-life being employed here is pretty encompassing). So pro-life secularists constitute about 2.37% of the population, a considerably larger share than the secular right community, at 0.67%, can boast!
GSS variables used: GOD(1)(2)(3-5)(6), YEAR(2000-2010), ABANY