It's also probably much, much easier to port to an interface that includes some physical controls. Minecraft uses a number of control on the PC (movement including crouching and jumping, interacting with M1/M2, inventory, menu). I can't imagine what a pain it would be to adapt that for purely touchscreen.
I've tried to play console adapted games on touchscreen via emulator, and it just simply doesn't work well. Games with action are horrible (Super Mario World was what I tried), but even turn based games are annoying to control. Having buttons really makes it easier.
On a completely unrelated note, that's why I bought a Droid 1 and then a Droid 2. I really wish more Android phones would include a physical keyboard; they're a much nicer experience than any touchscreen keyboard I've ever used, including the iPhone's.
I've tried to play console adapted games on touchscreen via emulator, and it just simply doesn't work well. Games with action are horrible (Super Mario World was what I tried), but even turn based games are annoying to control. Having buttons really makes it easier.
On a completely unrelated note, that's why I bought a Droid 1 and then a Droid 2. I really wish more Android phones would include a physical keyboard; they're a much nicer experience than any touchscreen keyboard I've ever used, including the iPhone's.