Heaven is a place where all the dogs you've ever loved come to greet you.
Although I'm an atheist, I try not to crap all over people's belief in God. It may be nothing more than a placebo, a fairy tale that gives the hopeless hope, but sometimes a little hope is all people need to get through the day. Imagine a unit of soldiers under heavy enemy fire. They are told by their superiors to hold their position, even in the face of overwhelming fire power. The soldiers are being told that reinforcements are on the way, and that thought alone gives them the hope and courage to continue fighting, even if ultimately the reinforcements never arrive. I think some people simply need to believe that God is sending them reinforcements, to get through another day.
I believe, if there is some sort of higher power, the universe is it. Whenever religious people ask me where the universe came from, I tell them that it has always been here, and was never created. The Big Bang theory is based on the fact that the universe is expanding right now. And if you rewind the tape, the universe appears to be shrinking. If you rewind the tape far enough, eventually the universe must be just one singular point. Or so the theory goes. But what if the universe has not always been expanding? What if it's pulsating, and one pulse takes trillions of years, and right now the universe is inhaling, and before that, trillions of years ago, it was exhaling?