1, 2, Buckle my Shoe

Trying to wrap my head around numbers. Bear with me for a second.

Everyone knows there are an infinite number of integers (1,2,3 etc...) There is no limit to to how high we can count. And between any two integers, not only does there exist another infinite amount of numbers (1.1, 1.01, 1.001), but it is actually a larger size of infinity (http://en.wikipedia.org/wiki/Aleph_number). Yes, that's right, and not only are there different sizes of infinity, but there are an infinite amount of sizes of infinity; the size of which is infinitely larger than them all.

Sometimes I wonder if our entire universe could be merely a single atom within another universe that we will never be able to fathom, and then I'm like, why the fuck would I ever want to think about that?