"If heaven doesn't exist then I've wasted my life but if it does exist then you'll be wasting eternity"
Lol wow thats such a presumption on so many levels!

1)that god exists - (I don't believe so ...but lets extend the case so you can see the problem with your statement...)
2)that you are born in the right country - that has the religion of said god.
3)that you are born to parents that worship the religion of said god and not another.
4)that you don't convert to a wrong religion.
5)that you are even alive when the right "god" is around (what if you are born before your "god" exists as happened to countless people before...who also were all cruelly put in hell for non belief) what if this "god" like countless others is just a fake
6)most likely if you follow christianity and you obey current human rights you will go to hell as they disapprove of punishments sanctioned in the bible
7)even if you are the right religion you may not be the correct denomination.
8)what if your existence is just a dream with in a dream - and that we are just a figment of another beings imagination - do we even know the physical reality of our existence?

For all of these chances of fate you would be sent to hell by and "all forgiving" and "benevolent god"....that had omnipotence to know your chance of finding "god" was always stacked against you in such a way as to be unachievable... but still punish you for it.

Sounds less and let like a sure bet to me...
I'd rather go with reason, and the ability to think for myself and have relationships that have equal respect that require no proof but just have unconditional love. (a hint here...no gods offer such a deal)