Heaven & Hell

What if heaven and hell don't exist? Are people still praying to their God and have motivation for their religion? Do they become a non believer and put their faith into something else? Do people stop doing bad thing or good thing or doing booth in the same time? Is that religion all about? About heaven and hell...? About reward and punishment? As we know, many times perhaps, we do bad things even we already know about Heaven and Hell concept.

So, what will happen if that concept not even exists? Does chaos will appear? Or order? Or order after chaos? Is it knowing that God always watching while we crawling in our path of life is enough to keep us away from doing bad things?

I still wondering about this, why the conception about religion is sometimes miss-understood by some people (or at least, by me). Or maybe I am wrong, maybe the conception about heaven and hell is basic knowledge for truly essence of religion it self or about God it self? Or maybe that just simple analogy for describing the complex concept about universe creation, about God. Maybe, the truly question is about our true existence in this "relative world" that we're living. What is the main purposes of our existence?

If heaven and hell don't exist, is it human will stop to become a human? Once again, we are living in relativity...