Why is there something instead of nothing?

When I was a child, and I learned how large the spaces are within an atom, (or so I’ve been told) my model was that our universe, galaxies, everything…the whole bit were perhaps the protons, electrons in someplace elses atoms …I imagined we existed in a truck fender.

My prediction was that we might crash into another car some day…:eek: and thus our ending would come.

I dont have the math to back that up though. :smiley:
edit: I think the “how” of this question is the correct path to peruse, the “why” is a bit trickier.