Frankly, most of the athiests I know (and have known in the past) act far more like truly religious people than most of the outwardly religious people I know, lol.
It's a facade we have when not being jerks on the internet.
Nahhh- it's because you guys have more of a logical and reason-based foundation for how to live in a civil manner. Not the ones who are atheists based on rebellion toward their parents and childhood- they are just angry and insecure, but the ones like you who feel secure in their own path. There are atheists who disbelieve because it's the "intellectual" thing to do, and there are atheists who are just pissed off and feel cheated, then there are those who would be the same person regardless of their belief status.