Punch-Drunk Love (2002)

Why does Sandler wear the same ugly suit in every scene? Why does he stay in contact with his horrible sisters? Why does Emily Watson want him? Why does he want her? Why is the soundtrack so loud and carnivalesque? Why did most critics say that Sandler was brilliant? Why was this story praised? Why is this nightmare categorized as a comedy? What's the significance of the little piano? Why am I seeking clarification about a film I'd like to forget?

D