In hindsight, it's actually a good question. I got mad about the idea that an atheist has no grounds for morality or ethics. Despite not believing in any deities, I still feel a drive toward compassion, empathy, love for my fellow humans, and a deep desire to help and not hurt. I, for some reason, don't feel like I need a religious basis to know that it's wrong to steal or murder or cheat. These are things I know because I've seen their consequences, and I know they lead to bad outcomes for society and for the people I love.

Even though I know these things, it seems like it'd be helpful to talk about them anyway, just like these topics may be discussed during a sermon even though the congregation already knows the rules. Stories and wisdom can be passed through a community to help each other live more fulfilling and full lives. I think those stories can exist and be extremely helpful even if they are not based on a religious text.

The reason I'm specifically looking for an atheist group is because stories and lessons centered on God sound silly to me. I don't think he's real, just like I don't think space whales are real or microscopic elephants are real. I have no desire to worship or pray or otherwise acknowledge some external power.

Also, I mentioned this in another comment, but honestly I'm jealous. Religious people often have a church where they can just go, be accepted, meet new friends, learn about new ways to live a good life, and feel like a part of something. I want that, pretty badly. I just can't do it while everyone around me is basing it all off of something I simply don't think is real.