[psychphysic]

Since we don't (yet) have a fundamental theory it stands.

Not only that but the shut up and calculate mentality is still the most dominant one within physics.

Should string theory turn out to be the fundamental theory then it's possible the 'Why' will be that's the geometry of our universe. Which is not more for filing than tweaked constants.

Unfortunately no physics won't tell us Why. That's a question for philosophy.