Actually, in considering morality I think athiests get the best kind.
You accept that all moral philosophies are inherently constructed by people, which means you yourself are capable of constructing one. You also get for free the ability to ignore any part of someone else's morality you don't like.
I can't stress the last part enough. I can accept the morality of Jesus without requiring an explanation as to why god could order genocide as a punishment for not being welcoming. I can take that entire morality and cut out what makes no sense, and unlike the religious person who struggles with that explanation, regularly giving unappealing answers to the critical mind (roman slaves were treated differently so that is why slavery is OK...leads to "so the freeing of the slaves was wrong and against nature, why didn't Lincoln be a good christian and simply require slaves to be treated as they were in ancient Rome?), you can just cut it out as an incorrect view.
Athiests get it easy. Religious believers of most western religions have the hard time with morality. And for athiests, its incredibly clear why.
And of course, this view isn't limited to athiests and not all athiests may agree, but it is a view that is completely consistent with atheism. It happens to be many eastern religions follow in some way. It may be why those rejecting western religion gravitate towards eastern philosophy (which is just religion in those countries).