Recently, there was a comment that indicated that atheists "lacked humanity", based on comments from a small segment of atheists.
I'm not a hardcore atheist; I will not argue to the ends of the earth for the lack of a deity. Deities and spirituality are totally foreign to my way of life, and I simply do not care about it.
I call myself an apatheist. I could also call myself a Meh-thodist, but that would be a bit blasphemous.
This doesn't mean I lack humanity.
It means that I use a (sometimes flawed) method of utilitarianism when I make decisions involving morals or impact on other people.
It's the same moral calculus that religious people use, even though they often credit belief in their deity for their good behavior.
It's frequently flawed. But, for every Ayn Rand and the serial killer she idolized, there is a Mohammed Atta, a Baruch Goldstein, an Eric Rudolph, a Jim Jones, a Shoko Asahara - all killers who couched their slaughter in religious terms.