Life 'Sin punished or Good rewarded' ?

When we were planning the trip to Varanasi, a friend said....'I'll come and see you when you're back, then even my sins will be purified'. (apparently Varanasi is so spiritual, that even second hand, it washes away ones sins ) 

And of course you die there, or get cremated there, and it's moksha, permanent release from the cycle of life.

And that's presumed desirable.

All religions tell us we are born of Sin, and Moksha, Nirvana, Heaven, Jannat...all of these are release from sin.......from Life.

Forget what counts as sin (highly debatable), let's just presume we have committed sin.....some or many....... say even accumulated over lifetimes. What happens to the Good we do? Wouldn't the Good by far balance out the sins?

Doesn't it then figure that life could be a reward for Good done, rather than punishment for sin........and the more good you do, the higher the chances of being allowed to live again?

Life's a reward....not a Punishment. 

That's one way there would eventually be only good on earth.  What say??