America and Religion?

I live in the UK, and neither me, nor anyone I know goes to church or takes religion seriously.
I personally don’t beleive in a god(s) and don’t really know anyone who could fully say with 100% conviction that they believe in god.

However, it is not like I have never been taught about religion. The school in my local area was a catholic school. So i have grown up learning about the bible and Jesus and god, but I just find the whole thing to bizzare.

I hear this is a totally different story in the USA though, and it is very unsual to not lead an active religious life.
Going to church, praying before meals etc…
Or is this just a stereotype I have learned from TV?

Is America more religious than Europe?
And why is it?