The only ones I don't have are PS4, Xbone and Vita.
I plan to get a PS4 in the future when it has a library large enough for me to bother with it. So far, most of it is available on PS3 as well so I don't see the point.
Obviously (as I said) I have a PS3, as well as a silver PS2 and a PS1.
I have an N64, a Gamecube, a DS, a 3DS XL, a Wii U, a Game Boy Advance, Game Boy Color, Game Boy Advance SP and the original yellow brick that is the Game Boy.
An Xbox Crystal and an original Xbox 360, both of which gather dust (dunno why I even have them).
I also have my laptop. It's not the greatest gaming device ever but I still game on it quite a bit.
In the household we have 2 PS3's, 3 3DS's and about 6 DS's.
Though all the ones I listed are mine. I don't let anybody use them. My parents don't want to anyway and I just don't trust my brother and sister with them (with good reason).
A friend of mine always tells me "why get a console when you can be part of The Glorious PC Master Race?"
I don't have a gaming PC, I just have a 3DS so I don't know what to answer to that...
That kind of attitude from PC gamers is what turns me away from playing on PC...And I say that as somebody that also games on PC. It's just such an awful, self absorbed attitude.
There are pros and cons to both platforms. It generally just depends on preference. I prefer consoles personally.