[toupsie]

Why can you not have morality without faith? What if you realize living morally makes you happy? Or is morality only a way to get into heaven?

Morals are a function of faith. If you believe in nothing how can you derive a moral foundation from emptiness? Atheist don't believe in heaven hence the name "atheist".

[general_re]

Morals are a function of faith. If you believe in nothing how can you derive a moral foundation from emptiness?

I am not really an athiest, but I think it might be too strong of a statement to say that athiests believe in "nothing." In any case, I imagine that it might be possible to deny the existence of moral absolutes while at the same time recognizing the inherent utility of behaving as though there were.

[stands2reason]

If you believe in nothing OR are agnostic, you can still realise morals are worthwhile because to live without them means to be unhappy. It can have nothing to do with a "greater reward." Do you believe that morals are only good for that greater reward? Immorality causes suffering in this life, too, not just in the next.