Many people believe in some power stronger than what we are able to see. Gods, souls and reincarnation. No matter what we believe, something will happen after we die, even if what happens is eternal darkness, which no one can imagine. Many people hope that death means reincarnation in another body, a new life. The thing is, we can only hope, because no God has given any global signs in these modern times.
But do we really want to know that we get reincarnated or that we go to heaven? Think closely. You, as a person, might say "Yeah I want to know because then I can live a good life without having to think of death."
In some cases, this could be right. But what if there was a global sign to all of Mankind here on Earth? If everyone knew that no matter what, they have unlimited chances in life then a massive chaos would erupt. Murder, rape, child abuse, robbery, and we can go on... Everyone would do exactly as they wanted because "Well, I'm just reborn again." Perhaps God is so clever that he knows this will happen and therefore gives no sign.
Another thing is very important to consider... There are two possibilities; there is something stronger than the laws of physics or there is not. So what if God were not to exist? Eternal nothing for everyone and everything?
I hope this provokes you to have a better understanding of existence and the possible force beyond life. Think about this but mark my words, do not think too much about this!