I find your answer interesting but to tell somebody that you can't find an answer is not something you should really say in theoretical physics. You have to know why the universe works the way i does, to really find out how it works...Like cause and effect... And I strongly believe that we some day physicaly can explain how and why the universe acts the way it does. And to quote the great Stephen Hawking "There is no need for god in M-Theory", so "why" is a good question in theoretical physics, maybe the best one?
Best regards
Witch theory do you think is the best unification of general reletivity and quantum mechanics?