What if humans didn't have moral lines drawn? It's depressing to know that one day I will die and never exist again; why believe it? It's hard to believe that humans were an accident, or were a product of what was once molecules floating in space.
Religion will never die out. Humans have done this into past, they try to drift away from what's right, and they end up far worse than before. It's the only thing keeping our secular world sane.
Morals are just us regular people following laws. Religion is no different. The bible is just a book of laws with some history thrown into the mix. Sure it has morals but who follows them? Turn the other cheek and love thy neighbour etc.. No one follows those morals just the ones about not killing and any others that carry prison sentences.