Whenever I feel the need to playing a Pokémon game, doing it through roms and emulators is pretty much what I've consulted to doing, ever since I made the biggest mistake of my life a few years ago by giving away my oh so once beloved Gameboy Advance SP together with my collection of Gameboy Colour and Gameboy Advance games. That was a decisions I've really dreaded, though if I hadn't done that, I may never even have joined the community.
Anyways, yes, I do play Pokémon on my computer.