I think it is laughable when non-believers deny the value of belief, as it just seems so obvious to me. That said, I choose not to believe and gain those benefits because I believe a God, as we normally conceive of, does not exist. I think of belief in God like many other concepts and ideas. Love, for instance, does not seem to exist. It is, in a way, an app you choose to run on your brain, and it comes with certain features and costs. Then again, I work in software, which I also believe does not exist, so I have a bias in that I think things do not have to exist to be powerful.
Edit: I guess I think of belief in God as a sort of 'local maxima', where it has benefits, but I'm holding out for some sort of greater maxima that can be found with a philosophy and belief system without God.