Because existence is a natural property of everything. Non-existance doesn't exist, it's only an idea in our minds. There is always something, there can't be nothing.
God spoke into existence the universe
when will earth be wiped out of existence? We ARE NOT the only existence in the universe.
Helium is has been in existence since the beginning of the universe.
An acosmist is someone who denies the existence of the universe, or of a universe distinct from God as the creator.
The existence of matter is not infinite, as there is a limit to the amount of matter in the universe.
The universe
The name Universe refers to all that there is in existence, therefore nothing can be outside it.
Fermium is an artificial element; the existence of fermium in the Universe was not still proven.
A panentheist is a person who believes in panentheism - the doctrine that the universe subsists within God, but that God nevertheless transcends or has some existence separate from the universe.
The number 42 is said to be the meaning of life, the universe, and pretty much existence. The number 42 is said to be the meaning of life, the universe, and pretty much existence.
God spoke the universe into existence. See the first chapter of Genesis.
The Kalam Cosmological Argument is a philosophical theory that posits the universe has a beginning and therefore must have a cause for its existence. This argument asserts that since everything that begins to exist has a cause, and since the universe began to exist, it follows that the universe must have a cause, which many argue is God. The theory emphasizes the idea that the existence of the universe points to a purposeful creator.