That is part of the wrong question. It is relevant to the "Atheists are going to Hell!" debate, not the, "Are atheists nice people?" debate.
The former question is hard to collect any solid information on. The latter is much easier to, but a lot of people don't like what the collectable information seems to say. (And it is very easy to debate what the collectable information really means - which is what we're doing here.)
Cheers,
Ben