I think that too many people in this thread are over-generalizing. There isn't anything wrong iwth religion per se, and I say that as a professing atheist.
The problem (IMHO, of course) is rather the widespread lack of self-trust that finds an easy home for expression in our particular contemporary religions. People do not trust their own beings, and in doing so they build a deep mistrust of the world and the others within it.
The mistrust is a consequence of the large gap that exists between people's ideals and reality. Mistrusting their worlds, then, religious people seek to find something they feel they CAN trust. They invent a being that embodies the superlatives of their ideals: omniscient, omnipotent, omnibenevolent, everlasting. This being symbolizes the ideal relaities they can subjectively conceive but that they fail to observe in their present moment. "Why aren't things better?" they asked themselves. To answer this question, people projected their ideals onto God -- a being said to be distinct from this world -- and then deprecated their immediate realities for failing to match those very ideals.
Not realizing that God is a symbolization of human beliefs, then, unconscionable distortions often occur. These we observe in exaggerated fashion with religious extremists. Obviously, any God worthy of the moniker would not desire the deaths of all non-Muslims, or non-Protestants, or non-whites, or homosexuals. Those that believe such things are blind to the fact that their perception of "God's will" is merely a projection of their own ideals onto an imaginatively objectified concept.
Ironically, it is again the peoples's own mistrust of themselves that makes it so difficult for them to realize the facts. Dogma can provide an all-too-comfortable operational framework wherein very little need be left up to the individual. He can then feel safe to act when he is confident in his adherence to dogma. Of course, inherent in the dogma is usually the dogmatic belief that the self is sinful, depraved, and helpless but for the grace of God -- hence the necessity of adherence to dogma. What a vicious spiral!
All of this is to say that it isn't religion per se that is the culprit. It is the fact that people trust dogmas over the voices of their own being. It is the fact that people have been taught to look upon their own bodies and minds with suspicion. Many people think that, left to its natural inclinations, mankind would destroy civilization and wipe itself out of existence. But what created humanity and human civilization if not its natrual inclinations?
Yeah, yeah... Goddidit. Right. Grow up. Those stories were useful when our species was in its infancy, but the time for children's tales is gone now. It is time to proclaim what is truly our birthright: self-trust and self-responsibility.
/steps off soapbox