Right. I hear some theists say that the disputes and differences are the fault of people. OK, then why did God create people like this so they will be in so many disputes?Protestants kill Catholics and Sunnis kill Shiites and Christians kill Muslims. Is that why god gave different religions, so that people would have another reason to hate and kill each other?
If God gave different people different religions, but knew these people would fight over the differences, then God is either inept, or a sadist.
When a theist suggests it's not God's fault that humans act this way, then why is anyone worshipping this God at all?