I will preface this post by saying that I don't believe in a god. I don't subscribe to any religion, and I'm a big proponent of the separation of church and state. That being said, most of the religious theories on what happens to us when we die don't make sense to me, except for one. Reincarnation.
Now, I don't mean reincarnation in the traditional sense in which you die and become another being and continue living on, but I mean it in a more scientific sense. If you think about it, everything in the universe is just as old as one another. You, me, the moon, and the sun are all the same age. We are all made of the same particles and elements which were created when the Big Bang happened. It's an incredible and sometimes overwhelming concept to me when I think about the sheer beauty of it.
Eventually you will die, and your particles will be broken down to supply new life forces with materials to live, so in effect you are still around. I wonder where all the carbon molecules in my body have been before I was born? What famous historic things have my particles lived through? It's just amazing to go outside at night and look up at the stars, knowing that I share the same building blocks with everything else, and the universe is like one big, living entity that recycles everything.
Someday I will die and somehow something's gonna steal my carbon...
...but I'm ok with that.