Only thing it had any use for was emulation but hell you can emulate on a bunch of other devices. True ouya can do emulation out of the box, but why bother when you can just do a little work and emulate on a dozen other devices you probably already own.
1) Because I want to do that stuff on my huge TV.
2) Because if I want to have a kick-butt game of 4-player Super Bomberman on the SNES, I don't want to do it while huddling four people around my 17" laptop.
3) Because I don't want to screw with hooking up a PC/Laptop/Tablet/Phone to my TV.
4) IT'S ONLY SIXTY BUCKS. (Fine, that's like a full-days wages for a minimum wage earner....).