If you like great fun current gen games. There is no other machine to get.
You will miss out on the generic shooters like new CoD games and Battlefield and games like GTA and obviously the exclusives but they are few and most of them arent that great. I understand if anyone would want a PS4/Xbox to get those games but you will also get games that will never appear on another console Like Smash, Mario Kart, Bayonetta, Donkey Kong Coutry, Mario 3D World, Pikmin 3, NSMBU, Wonderful 101, Kirby, Captain Toad, Lego City, Hyrule Warriors and so on. And obviously Zelda and Xenoblade to name a few.
My PS4 is collecting dust, waiting for Uncharted and No Mans Sky (granted I havnt played Bloodbourne yet it is supposed to be awesome), my brothers Xbox has barely been touched but I use my Wii U on a daily basis.