What about the 21 grams you lose when you die. Really I dont think anybody knows shit not even google when we die well find out.
There is no scientific evidence or reason to think that some substance lives in our body and parts after we die. It ridiculous to claim "nobody knows the truth!" when science is so advanced it's possible to count the size of Eagle Nebula, 600500 light years away from us or make artificial limbs and attach them to disconnected nerves. There is no mystery in science world, only the puzzles that haven't been solved YET. Don't forget that some time ago thunder and lightning was unexplainable, but today it's well know fact.
The earlier you'll realize that there is no afterlife the more you'll learn to appreciate your life as a one time chance.
What a lucky coincidence that somewhere in a vast universe on an inhabitable piece of rock flying at a speed of 107,300 km/h around a star that is not even close to the largest known star, a particular combination of atoms became "you". And with this I am not aiming to show off any knowledge, it just makes me angry how people are tricked into thinking that their life is in hands of some high force which will lead their souls into a peaceful serenity, instead of valuating themselves as unique as they are and living right now.