If you want to see a modern example of the effects of organised religion (more to the point, theocracy), you don't have to look any further than the Iranian Revolution in the 1970s. Iran went from a secular, pro-science society to one ruled purely through fear induced by the dominant religion.
I have always tried to maintain a dialogue with people, no matter their way of thinking. However, in recent times I've come to realise that unless you subscribe to a person's religion, any respect they give you is false. They think, by definition, that you are going to a different place to them in an afterlife that nobody truly knows exists. It doesn't become apparent until you come into conflict with the tenets of their belief (sexual orientation being a current one) - then watch them try to politely tell you wrong.
The truth is organised religion is more a burden than a boon, and the quicker we move past it as a species, the quicker we can move on to things that actually matter.