Matter can neither be created nor destroyed.

If you look at that statement, (which is a fact)
it brings me to the conclusion that "we" have always been here since the begining of time, only in different form.


Everything you're made of has existed before you.
The Trillions of atoms that you consist of were simply put into a certain, complex order and you are the result.

Think of it like a car.

You start with scrap metal.
That scrap metal is turned into a car.
The car eventually breaks down and once again returns to being scrap metal.