3DS: owned four. Sold my original black (Cosmo?) when I got a New Nintendo 3DS XL. Bought a Japanese charging dock for it a week ago. Looks sexy. Last game I played was Ocarina of Time in preparation for Breath of the Wild.

WiiU: Still have it. Still love it. Best porn viewer I own! Played Super Mario 3D World roughly a week before I got my Switch. Also tossed in Xenoblade Chronicles X just to see how it looked on my newish TV. Still a few games I want to buy.

Switch: Got it on day one. It's almost all I've played since launch day. I've turned on my PS4 just to see if I had the update and to see if Nier had downloaded. Turned on my XBO to watch a movie (www.m4ufree.info and set the console to mobile browser, if you're curious...) A but that's it. About 6 hours of Zelda a day since launch. I broke down and bought Fast RMX, too. Pretty looking game.

3DS - 2 (one mine, one for my wife)
Wii U - 1
Switch - 1
Currently playing: Breath of the Wild, I am Setsuna, Shovel Knight: Treasure Trove, Frontier Days: Founding Pioneers, & NEO GEO: Shock Troopers, Metal Slug 3, NAM 1975
Plan to get: Arms, Disgaea 5 Complete, Dragon Quest Heroes, Dragon Quest X & XI (if they release playable in English), Dungeon of Zaar, Elder Scrolls V: Skyrim, Fire Emblem, Fire Emblem Warriors, Has Been Heroes, Kingdom: 2 Crowns, Nobunaga's Ambition: Sphere of Influence (if released playable in English), Romance of the Three Kingdoms XIII (if released playable in English), Shin Megami Tensei, Stardew Valley, SteamWorld Dig 2, Super Mario Odyssey, Xenoblade Chronicles 2

I have not used any system since Switch released (Xbox One included), but I do plan to continue using the 3DS and Wii U since I have a bunch of games for both that I have not completed yet.

Updated, probably the only and last bump

Thanks for the responses

Put some effort in it and count the total numbers of 3DS, total number of Wii U and total number of Switch consoles of the participants ;)

I already put in the effort to make a fancy table :p

I probably will, but that's not until the final update :/

3DS:
Do you own it, and how many? Planning on getting one? Do you still play it?

I've got 1. I still play and I guess I'll be playing it for the next two years or maybe more.


Wii U:
Do you own it, had owned one and sold it off, or planning to get one? Which version? Do you still use it and for which games?

Yes. Black. I'm still playing some old games.

Switch:
Do you own one? Or want to get one but can't because of stock? More importantly, what games do you currently own and which ones are you for sure planning to get?

No. I don't want to pick it up. Maybe when Switch 2 comes out.

I have a 3DS and a New 3DS, still play it.

Got the Wii U Wind Waker edition three years ago, still use it and play mostly SSBU, MK 8, Zelda, Splatoon, Nintendo Land, Shovel Knight, Xenoblade and Mario games.

I don't have a Switch, but I'm planning to get one around summer when Splatoon 2 is out.

3DS:
I currently have 2, the special edition Zedla regular and the SE Zelda New 3DS. I had another one that I started to have button problems with it when the warranty ended.

Wii U: I have one, the deluxe edition.

Switch: I have one with almost all the games currently out for it. (With the exception of Just Dance and three of the Neo Geo ACA games.)

Currently playing Breath of the Wild on the Switch and FE: Awakening (Trying to finally finish it I had an SD card problem that wiped out my game near the end that kind of took the wind out of my sails.)

3DS:

2x3DS (Zelda and Princess Peach limited)
2x3DSXL (Zelda and White)
3x2DS 9White/Red - Blue Transparent - Pokémon Moon Limited)
2xNew3DS (Smash and Animal Crossing)
3xNew3DS XL (Zelda, Hyrule and DragonBall)

Yes - many games, amazing

Wii U:

Have Black, Limited edition Zelda and White Basic. Playing one last game!

Switch:

Both versions, one sealed. Zelda - 1-2 Switch and Clipperssnips.

3ds: yes, 3.  have a black launch unit, a link between worlds edition xl, and a black new 3ds xl.  still using the new 3ds xl (playing Final Fantasy 3)

Wii U: black model, yes still in use (Mario Maker frequently and Smash)

Switch: yes, with Zelda and pro controller.  buying MK8, Splatoon2, Shovel Knight:Treasure Trove, Mario Oddyssey, Skyrim, etc etc etc