@VawX A lot of Asian MMOs support gamepads natively but most of them can be played with one with a bit of setup. I used to play World of Warcraft with one because it's a lot easier on your hands when you're grinding all weekend.
@raifive I played Dragon Nest, and I don't really see why you would prefer gamepad compared to mouse and keyboard, but yeah I guess I can see it played using one mmm...