I think what we know about the Universe means it has to make some sort of sense... One thing that complicates it is to just about every quality there is an anomele where normally 'this is true for all things, except in the case of...'
But as the Universe is so large and complicated, it would take forever just to fully understand just one second of what is going on...
Just think of a clear memory, 'how many different things can you say were going on in that memory?'... the answers will end up being so long that it will seem almost impossible to live through a situation and know exactly what was going on...
I guess the Universe does make complete sense, we're just not within our senses enough to make that much sense of it all...