Stephen Hawking’s new book “The Grand Design” purports to show that the universe created itself from nothing (more detail here), thus eliminating the necessity for the existence of any divine and omnipotent Creator.
Because there is a law such as gravity, the universe can and will create itself from nothing. Spontaneous creation is the reason there is something rather than nothing, why the universe exists, why we exist. It is not necessary to invoke God to light the blue touch paper and set the universe going.
Unfortunately for Hawking, he instead proves that even brilliant physicists can commit glaring errors in logic.
Science cannot answer every question. Science is fundamentally unsuited to answering philosophical and theological questions, including any explanation for why there’s something rather than nothing. You’d have as much luck weighing a chicken with a yardstick.
As Parmenides argued, ex nihilo nihil fit … if you’re really starting with absolutely nothing, then nothing will ever be. There is no created thing which can create itself.