I have reconciled to the fact that, we will never be able to solve physics. There is recursive why, which we can never stop with, there will be always smaller and bigger things to deal with.

By what reasoning did you come to the conclusion that there will 'always be bigger and smaller things to deal with?'

I'm interested in if there is a compelling reason to believe this? I'm not attempting to argue that we are near complete knowledge of the universe (and especially what potentially may lie beyond or outside of it, if there is anything or not).