I think that would be reasonable enough for some atheists, but not all of them, a lot of atheists have different reasons for being atheist, and that’s not going to work on all of them. Now, it’s not that it’s a bad argument, but there are some people it’s just not going to work on. It’s like how a lot of times atheists will say that Christians only believe in Christianity because they were raised that way, well I wasn’t raised a Christian, I wasn’t really raised anything, (although I would argue my family was culturally Christian). Same kind of issue, if you want to debate with an atheist, you need to know why they identify as such. Again, I don’t take issue with what you say, I think it’s a good argument, but it’s not going to persuade everyone.