I’m here because I’m a compulsive multi-tasker, and I’ve got nothing better to do while I’m also doing the better things that I have to do. Yes, I realize how ridiculous that is. I have no fucking clue why I’m a Top Writer, but I suspect it’s mostly because I’m here a lot and therefore post lots and lots of answers.
As for atheism… nothing “drove me to atheism”, as you put it. I’ve got no reason to believe in any sort of deity, so I’ve never done so. I did try really hard to for a few years in my early teens, but that’s only because I’d gotten it into my stupid teenage brain that I wasn’t allowed to be interested in folklore unless I believed in it.