It still depends on the types of games you enjoy. Sure, Zelda's great. But would you rather play Splatoon 2 or Death Stranding? Personally, in my opinion a PS4 is the better option. Much more games, and much more serious games. I like darker games a lot more. That's really what you should consider, what types of games you like.

Also keep in mind that the Switch will be getting a paid online service so you'll have to pay monthly just to play mario kart online.