I used to use emulators a lot to play old games and handheld games with tablets. But I do not much anymore because I think console and PC is vastly superior to handheld games.
And my friend used to pirate every 360 game and always said I should too, but he kept getting busted by Microsoft and had to get a new console every year. It seemed like a ton of work with very little money saved, so I never did it.