Religion is violence, religion is slavery. The idea that standardized morals and beliefs - especially ones that deal in absolutes - should take precedence over individual intuition and feeling is oppressive in it own right. How narrow to limit your criticism to a single sister religion.
"The first revolt is against the supreme tyranny of theology, of the phantom of God. As long as we have a master in heaven, we will be slaves on earth." - Mikhail Bakunin