Moose, I think I'll say it again - you're out of your mind dude.
I highly doubt MIDI will be gone anytime soon. It's got such a HUGE grasp in the industry it's not even funny. From feature film composers to big time metal producers....anybody who is anybody is using MIDI in some way, shape or form. For one man bands, it's a godsend with all of the available vitrual instruments these days including Drumkit From Hell Superior and HardCore Bass XP and extensive orchestra libraries like EWQL Orchestra and Sypmphonic which are used in the movie scoring world all the time. They all need MIDI to work. On the studio side of things you can use MIDI from a module hooked up to triggers to more efficiently trigger hits using Drumagog and the like rather than editing audio tracks so they aren't mistriggering. Also you can use the MIDI notes *to* edit the actual audio, instead of doing guesswork.
MIDI can be used for soooo many different things I find it nearly impossible to get rid of. I think Mr. Murphy said it best, there would have to be something immediately better than it before it would go away.
~e.a