well said! Belief in God - or anything else - can be dangerous. Including disbelief in God. :p
I do agree that religion has a reputation for tapping the inner stupid, but I think its somewhat undeserved. Afterall, wars may be fought in the name of religion, but religion didn't cause them. Clashes over resources caused them. Religion was just a convenient, but ultimately unnecessary, excuse. Slavery, colonization, and the Spanish Inquisition all had far more to do with resources than with morals.
There are people who seek some pretty far out cults, but these are the same people that, say, buy amulets thinking the amulet will bring luck and protect the wearer from bullets. If it weren't the amulet, it would be something else. People will always sell snake oil, and people will always buy it because its easy. Its not religion, per se, taking advantage of these people so much as it is he characteristics of the people getting expressed. Trickle up, not trickle down, I say. Granted, groups of people take on characteristics, and group-think emerges. This is certainly a problem. But this is also a problem with mobs in general, and not specific to religion, either.
Beyond that, there is the nightly news effect. How often do you hear reports of a good Christian or Muslim who goes about their business quietly, helping people. Not so much. But the conservative televangelist who is bopping the gay prostitutes in between shows? All over the front page.