Says who?? Who or what should prevent us? I have already stated that the 'why' question is a matter of semantics, but if you are stating that attaining a full understanding of the how when where ect... of the universe, of everything at all times, is not for us to know;
then I ask you to back that statement up with some sort of evidence, logical or physical; because I can not possibly imagine anyway that your statement could be logical unless you are alluding to religious supernatural ideas...
We the human race are not separate from the universe, we are a product of it. We are as of yet a very rare manifestation of matter, just the same as any other physical manifestation of matter.
So then how could there possibly be any reason for us not to know ourselves??
If I've misunderstood your post BrooklynBees then I apologize for my frankness. I simply am very passionate about the cosmos and I consider myself to be an extension of the stars