I partially agree
I agree that religion is mental and can't understand why intelligent people can believe such toss. However, I beg to differ on it being the single biggest killer on the planet. Surely Malaria or HIV/AIDS holds that title.

I also disagree that it is the cause of wars / terrorism. Religion is used as an excuse to legitimise extremist political views and actions. Bin-Laden is not really doing all these crazy shit for Islam. He hates the West and uses Islam as an excuse for his actions as well as to gain support from others. In my opinion anyway.
(Tom Jones's Mojo Hasn't had any since, Fri 2 May 2008, 13:50, Reply)