I was raised without religion as well, though now I am an avid church goer and happy to be so.
But I think that there is a difference here in the topic of evolution and the topic of something along the lines of the anthropic principal.
The question of if there are long neck giraffes is a bit different from the question of why any giraffe even exists to begin with rather than the universe being some mottled or incoherent, non-sentient jumble of matter.
I have to say, I'd go with the atheists here in the topic on the theory of evolution, but as far as I can tell, there doesn't appear to be an answer from atheists for why the universe has the apparent order that it does that hosts life. And to be fair, theists have beliefs, but it's not like we were alive in the beginning to "know" these deep questions either beyond faith based ideas. For atheists though, as noted, the rabbit appears in the hat without any particular reason or rhyme nor even a purpose.
Atheism doesn't really have a clear philosophy on life. Something to collectively motivates people in life through ups and downs, together as a "church". It doesn't have a philosophy that makes efforts for cohesion of people.
@tas8831 what do you think of this?