Why is there something rather than nothing

Gottfried Wilhelm Leibniz. ... Leibniz thought that the fact that there is something and not nothing requires an explanation. The explanation he gave was that God wanted to create a universe – the best one possible – which makes God the simple reason that there is something rather than nothing.

1. Does nothingness exist?
2. Is it possible for something to come from nothing?

Does nothingness exist?

There is no such thing as nothingness, and zero does not exist.

Is it possible for something to come from nothing?

So particle-antiparticle pairs can be created from "nothing", that is from no particles to two particles, but energy must be provided, so these particles can be viewed as having been created from the energy.