[jwalsh07]

Virtual particles are continuously and spontaneously bursting from nothing all the time and everywhere. They are what cause black holes to evaporate.

Virtual particles are dependent on matter and energy so you're right back to where you started from. How do matter, energy and the laws of physics spontaneously appear?

[BikerNYC]

How do matter, energy and the laws of physics spontaneously appear?

A very good question. Why is there matter, energy, laws of phsyics, God, anything, rather than nothingness? I have absolutely no idea.