Quantum mechanics operate at the atomic and subatomic scale. Under these rules, even if all particles are removed from a region of space, it is not empty. Virtual particles come into and out of existence. If it seems strange, that is because it is strange. That is what happens though. These particles have no “creator,” yet they exist. Approximately 13.75 billion years ago, the universe was an infinitely small point. It came into existence. If quantum mechanics apply, then the early universe can be explained with physics and without creation.