Without God, are you really happy?

I am getting SICK of atheists and non believers!! I was just on imvu at a rave. there were these two guys talking on there and one of them said that they didn't care about living. I started talking to him and then told him i felt like that before. He said that he wasn't suicidal, just that he didn't care if he died. I said I didn't either and the human body is only temporary. He told me not to bring up that "Christianity crap."
I was about to get really mad, but stayed calm. That is what a Christian is supposed to do. So, I asked him what he believed. He said he was an Atheist. I didn't want to hear anymore. I left before I said anything hurtful like how he's going to hell... um..
I was very mad at the time, and I still am. I'm not going to get used to it or accept it. I am going to try my best to help these people. I have helped one already. Possibly two. Now I realize that I should have helped that guy too. I feel really bad about it. I just don't want anything to do with those people. I still have to help them. It is my duty.
When I left the chat I started to think "No wonder he's so depressed. He doesn't have God in his life." I've met some miserable atheists. So that's what's wrong with him. He doesn't have God. So truly, without God, we are nothing.