Well first of all, let's be clear that I also don't really know what I'm talking about.

But it's also clear from watching a lot of the science documentaries on TV, no one else really knows how things work especially at the quantum level. Einstein's stuff is called theories for a reason, they are just the best explanation so far. Until someone comes up with a better idea, they'll do.
I don't understand why things have to be so complicated. When I was a kid in school in the 50's, we were told that the very small structure of matter was like the solar system. But now it's string theory (there's that word again), brane theory or whatever.
I also think we're never going to completely understand all this tiny stuff. What's remarkable to me is even though we don't understand the structure of matter, we're smart enough to make use of what we do understand and develop the really cool technology that's everywhere today.
Gene