Still beating that false dichotomy. The options aren't just your God versus no god. It is your God versus no god and the hundreds or thousands of alternate proposed gods. If you picked the wrong god, you could be in a heap of trouble. Some religions have jealous gods (i.e. the god of the old testament.)
Hey! And don't forget the possibilty that there isn't ANY heaven! It's either nothing or some kind of non-heaven afterlife. 72-virgins, perhaps? Which, if one is also a virgin, would be pretty exciting for the first thirty days of eternity (believe me, if it's your "first time", you'll knock out all 72 in thirty days!).