Now I know why I chose to be agnostic and not take part in any organized religion.
Catholicism- At fault for the Crusdaes.
Christianity- At fault for the bloodshed in Ireland.
Islam- At fault for the WTC attacks.
This list is condensed but gives my point. I know it was the extremists that did these things. But the religions gave them an excuse and a common thread to recruit.
Never has the world seen a destructive force like religion except for human kind itself.
"It is now quite lawful for a Catholic woman to avoid pregnancy by a resort to mathematics, though she is still forbidden to resort to physics and chemistry."
-H. L. Mencken from "Minority Report"