I'm an admirer of what Microsoft and Xbox Live Arcade has done. The Wii was too casual for me, with a surplus of badly-ported and kids games, and lack of AAA titles. I've grown to hate Sony as a company (DRM, malware, etc.) too much to own a PS3.
Now I'm only left with a PC. Only?! Steam, Humble Bundles, ridiculous sales, tons of indie games, best graphics. (Did I mention Steam!?)