I'm only 14, you can go ahead and dismiss my ideas if you wish. What I believe is that Life and Death is another cycle in this endless universe. It is much like the water cycle, rain, life, evaporation, death, breakdown of chemicals. When a human is broken down, like anything else, it is a chemical equation. Like anything else, it can be broken down and spent elsewhere. As the law of conservation of mass and matter states, chemicals can't be destroyed. This means that our components will just be made into something else, if all goes well it will end up back in a humanoid form. Thanks for reading, once again I'm only 14 so if this is completely unintelligible, please dismiss or correct me. Correction is preferable, I would love to learn more on this topic.