No one seems to have a problem with the concept of infinity when we look at the Universe on a large scale. No one sees the edge of the Universe, perhaps it is infinitely big, or at least, finite but unbounded. Its possible that no matter how big a telescope we build, we will never be able to see the edge of the Universe.

Maybe the same situation occurs when you look the other way, into the smaller and smaller. Perhaps there is no fundamental "smallest" thing, or particle. Maybe no matter how powerful our microscopes get, we will NEVER find a fundamental particle or force, that the universe will continue exhibiting structure and detail regardless of what magnification we observe it at. If the universe can be infinitely big at the scales of the very large, why can't it be infinitely little at the scales of the very small.

Infinity may scroll on forever in either direction, constantly unfolding, no matter how many layers we peel away, there will always be an infinite number of others below (or above) that. Its a fractal cosmos, in all three dimensions---matter/energy, space/time, and complexity/chaos.