Religion seems to have some real survival value. Prayer can be inexpensive therapy. The idea of "believing" (imagining) you are talking to someone you can't fool that and who can read your inner most desires brings the possibility for objectivity that only the brutally honest can achieve spending hours practicing.
To achieve the same results as prayer would require many hours learning, linguistics, semantics, rhetoric, philosophy, & science. The average person doesn't have that luxury.
But like any human endeavor it must be done in the context of community. Religious practice needs peer review just like science. Otherwise, you get people like Born Again Bush who believes God told him he was chosen to fix the middle east.
That is the most redeeming thing about science or at least the philosophy of science. You HAVE to prove it to others.