Yeah I think the first 2 years of the WiiU's life were pretty dull since it had practically no games, but it's really thriving now.

To be honest I have quite a good library of games for it now (and there are many more that I want and am anticipating), so I'd definitely say it's worth the money.
I have Mario Kart 8, Mario Party 10, Super Smash Bros, Hyrule Warriors, Captain Toad. Also I have Pikmin 3 and Pushmo World as digital downloads. I've also played 3D World, Wind Waker HD, and Nintendo Land, but they're all my dad's games so I only play them when I'm at his house.

Also, Splatoon is coming out soon which I plan on getting, so... Yeah. xD Definitely lots of games to play, so maybe have a look through and see what games you would want before you plan on buying it.
Also, E3 is soon, too, so maybe they'll be announcing more games for the WiiU then, too. I mean we have Zelda U coming out next year, most likely, so there's still definitely stuff to look forward to. As for the NX, as other people said, it could be a LONG time until that comes out, so...
I got the Mario Kart 8 bundle which came with the game itself (physical copy) along with the black WiiU and gamepad, and also Nintendo did a deal that if you bought the game you could download a free digital game (out of like a selected number), too, so yeah, definitely recommend getting the bundles because they're much cheaper. I think I found a WiiU on one website for ?180, actually, which was pretty damn good considering you have to pay like 2x that amount for a PS4 or Xbox1 (perhaps even more!). I didn't buy that one though since you had to order it in advance, but ended up getting one for ?220, which is still really good considering I also got TWO games with that. So keep your eyes peeled for deals if you are going to get one.
Plus there are tons of games available on the eShop and you can still use it to play Wii games on and stuff, so that's always a bonus.
I guess it sounds like I'm praising it lots lol but I do really love the WiiU xD But definitely do some research first into what games you'd wanna buy, obviously.

I do highly recommend Mario Kart 8, though, that's probably my favourite game at the moment.