Also, some Web Browsers don't support music files, which can cause peoples computers to freeze or even crash.
Let's not forget the most important thing, MIDIs sound like shit.
Suppose, gentlemen, that man is not stupid... But even if he isn't stupid, all the same he's monstrously ungrateful! Phenomenally ungrateful. I even think the best definition of man is: a being that goes on two legs and is ungrateful.