I want to tell my younger brother - he's 13 - about how religion is nonsense but I've never found the courage to do so. Don't really feel comfortable. I'm hoping he gets there on his own as he learns about evolution in school and makes his own conclusions. He's not very exposed to religion at all as we don't go to church nor are my parents religious (though they aren't atheists either) so my parents won't be telling him about "god"....so that might help a bit. Although I'm not sure how my mom would react when he starts to believe god can't be real and all that...she thinks the Bible has some good in it...when I told her I was atheist, she didn't react as maybe a lot of religious parents would, but she wasn't exactly supportive. Another obstacle is that I'm not very close to my little brother and even with my family I don't talk a whole lot. And as I said, I'm a bit uncomfortable talking about these things for some reason.
He's a smart kid, so I really hope he comes to the conclusion that religion is absurd on his own.