There is confusion over what atheism actually is. Look here: http://en.wikipedia.org/wiki/Atheism#Implicit_vs._explicit We are born (implicit) atheists.

I also didn't say we should dismiss religion because it is irrational, I said people who were religious were irrational. I believe that still stands.

If anyone asked, I would say we should dismiss religion because it is harmful. Harmful to our stability, harmful to our advancement, harmful to the people that follow it and harmful to the people stuck in it against their will (either country, family or society). Today the negatives of religion far outweigh any good it can do. There was a time and place for religion, but we have outgrown it.