I read the same thing in a book, that atoms are hugely spaced. So much so that if it weren't for electrons charge repelling or attracting things, then we would all be part of everything, like mixed like soup. Like, if you hit a ball with a pool cue, the ball would pass straight through the other ball, the cue would pass through the ball, and your hands would go through the cue, and everything would be going through everything (except of course for the odd collision between hugely spaced electrons and nuclei). So ya.

Imagine, if we were all space and there was no charge on electrons, then, like, my penis could be part of my brain......