In One Or Two Sentences, Why Are You An Atheist?

Recently Reddit’s /r/atheism sub-reddit had a question asking users for a one or two sentence explanation for why they’re atheists.

I’ve got a lot of reasons but my own two-sentence answer would be something like this:

When I was a kid, my friend and I were really into Greek mythology.  He pointed out that the Greeks believed in their gods as much as people today believe in the Bible’s god. But as far as he was concerned, people just moved Mount Olympus higher into the sky.