Atheists: would you want to live in a world where you are the only atheist among a bunch of "good" Christians?

No, I wouldn't. Its the problems that you face on a daily basis that makes life enjoyable for those rare occasions when you finally get something done right. The problems in our lives are what shape us, and make us who we are, for better or for worse. without them, we are nothing but drowns. I'd much rather live in a chaotic world then a blissful utopia.