It's been ages since I posted, but I liked the OP so much I just had to chime in.
I would like to start a respectful conversation with anyone, but especially atheists, as to the benefits of ruling out with certainty the existence of a higher power or god.
What has been most important to me, having truly valued some of the social aspects of being religioius and what I really miss about any kind of religioius system, was a feeling of solidarity or brotherhood. Let me tell you, the greatest reward of being an atheist is knowing that we are alone, and all we have is each other and the present moment. The primary personal benefit to actually ruling this out, in my opinion, is the ability to realistically asess the choices one has in life and to decide on real priorities.
Further, when you recreate a strong social network, you regain the phsyiological benefits correlated to religion. And an attitude of being "connected" or at one with the cosmos in some way is certainly fully possible without gods. It actually makes more sense to feel *right* exactly how things are in that respect, since most religions have a component of "we don't belong here" going on.