I personally hate how games mistreat gamers who wish to play easy mode with things like
"You beat the final boss but there's still more, grow a pair and play on normal dipshit!"
or
"You just beat Normal! Now go play hard mode because there's a better ending when you play it on hard."
I don't play easy on the ZX or Zero games (If only because theres a thing you cannot do or obtain by playing easy.) and instead I play normal because of those limitations on Easy, thus allowing me to get better at the Zero series games (Thank god.)
Also, MM10's Easy mode (Oh [tornado fang]ing well I suck at playing games boo fuckity hoo, I'm going at Normal with Protoman so I'm not terrible or anything.) was a nice change of pace from MM9 (Which I will not be able to beat for the forseeable future), But if anything, all action, adventure, or platformers should come with a difficulty selection STANDARD. And allow players to access the whole game without telling them they need to suck less to get to the rest of the game.