Dust to dust. We die. Our dust, molecules, and atoms remain on this planet for the duration of the planet, maybe another 4 billion years. We may, for awhile, become calcified material on this rock flying through space at millions of miles an hour. Our dust is heading towards the Sag A*, when it gets hit by the Andromeda Galaxy. Meanwhile, the Sag A* and the Andromeda black hole (Does it have a name? Lets call it Joy.) are both getting sucked into the Great Attractor. Our dusty location is no longer suitable for life. The universe quickly expands so far so fast that all that is left is a cold dimly lit universe full of massive black holes. Eventually, all the black holes will either get together and pop goes another big bang, or the expansion will not allow them to gravitate towards each other, and they will finally lose their energy. So this 100 years is all we get. Pretty bleak scenario if you ask me. I think I like any religious idea where we get to have another thought - better.