I play mostly on my PC, 3DS, and Vita. I play my PS3 and PS2 often enough to keep them plugged up. I also have a 360 which gets used once every other month. My Wii stays in the drawer, my Xbox, DS, and PSP are in my brother's room, my PS1 is in the closet, the Gamecube and GBA are my brother's, and I no longer have a SNES.
I don't think I own too many consoles since only the Vita and 3DS are relatively new. I've accumulated everything else over the years. As I said a year and six months ago, I used to dream of owning every console and just tons of games, but now that I've got that I'm like "eh". I can't even think of a good reason to own a PS4 and/or an Xbox One yet. Maybe later next year. I'm not sure about the Wii U. On one hand, it's got a few Nintendo first party games on it that are worth playing. On the other hand, the only things on it worth playing are Nintendo first party games.