When you die... you're dead. We didn't come from anywhere & we're not going anywhere after we die. The only part of us that is even real is the body. Our minds, of which we are so fond, are just a bunch of electrical charges in the brain. And when we die those electrical charges just disintegrate. The interesting thing though is that the atoms that make up our bodies were forged in those first stars that were formed shortly after the birth of the universe in the "big bang" as it's referred to. So in that sense, we are a part of all that is, whatever it is...