Glad to hear you enjoyed it, but I will be honest with you. If you're looking for a console to play mostly by yourself and you don't have buddies over a lot... the Wii U kind of loses a bit of its charm. While it is an excellent console(I love mine a lot and use almost daily) and does have some excellent single player experiences, it definitely shines and is a ton more fun with local multiplayer.
That being said, go buy one already! Even if you don't appreciate it fully now, in 5-10 years you'll be super happy you have it imo.
I'm betting that its a collectors item and a full Wii U library will be worth tons of cash. Especially if you include Amiibos.