I reached the conclusion there is no god some 20 years ago. Until reading your post, I was unaware of the existence of atheist websites or atheist discussion forums. I've not actually engaged in a discussion with another atheist in all these years. I saw no reason to seek these things. I'm not trying to make fun of you or denigrate your comments. I guess the point I'm driving to is that of course, there will be groups of atheists that meet in various ways to discuss whatever they feel a need to discuss. I just never had that need.
I've never really felt like there is anything missing from my life. I'm married with 5 kids and 6 grand kids. My wife and I both still work and we do things in the community to help out when we can. We both vote and hold strong opinions regarding society. I'm pro-life because I am bothered by the idea of so much lost potential and I'm anti-illegal immigration because I am bothered by the knowledge that the immigrants are being turned into indentured servants. Well over 20% of our income goes to help others. Some of those people we help are family, some are friends and a few are strangers.
My wife recently told me that she too has come to the point where she no longer believes in a god. I've never tried to convince her that my lack of belief was superior because that always felt too much like proselytizing. Anyway, tl;dr kicks in here I suppose and again, I'm not trying to pick nits. It just seems somewhat incongruous that atheists would feel the need to get together in any way other than the normal social interaction that comes from being part of a larger community.
In any case, good wishes for success with whatever you choose to believe of not believe.