Yes, here we go again with you and that "one can't have values without God" horse ****. It's something that you shouldn't try to rationalize, St. Wronge. You will only pull a muscle in your brain.
Wrong again.
LOL! I'm not the one pulling a muscle in my brain when it comes to this one. And I'm not the one trying to rationalize. The rationalizations atheists come up with in trying to say there's a basis of morality if their view is correct are priceless.
Just admit that if there is no higher power there is no intrinstic right and wrong. It's not that hard.
Say you're an atheist soldier and it's just you and one other guy. You come upon a situation where you could save his life but you're 100% certain that if you do you're dead. Death means oblivon. The end of your existence as a being. Will there be something "wrong" with you opting to continue your existence? Is anybody going to know? Is there going to be any disadvantage to making the choice to try to live and let him die?
Of course not. And there is absolutely no advantage to making the choice to die so that he can live. You can say before hand, "well we all agree to behave like that because I we all say that if we all try to save each others' lives there's a greater chance that more of us can survive."
But now it's just you. And if you die that's it. Plus there's nothing intrinsically "wrong" with going back on whatever tacit agreement you made. The consequences of doing what you may have said beforehand is the "right" thing are certainly a lot worse than the consequences do what you said beforehand is the "wrong" thing.