Well, I for one actually love using MESS for systems like the SNES. Granted, I'm sad when a game I like has video errors (The Adventures of Batman & Robin, Tetris Attack, etc), but I can deal. I'm a big fan of the simplicity of MESS (and MAME, for that matter) - crisp and unfiltered graphics at any resolution, great in-game menu, easy to configure controls on-the-fly...

I only switch to bSNES when I hit a roadblock with a game (or I need to use the multitap). Otherwise, it's MESS all the way. I've been spreading the word to my friends as well, though I can't say if it's helping!