I had both.
Bought a Wii U in November 2013. While it did have some great games that I enjoyed enormously like BOTW, Bayonetta 2, and Mario Kart 8, the droughts were absolutely brutal and really soured my overall feelings towards it.
Bought a 3DS in 2015; Monster Hunter Tri was one of my favourite games of the 7th gen so when MH4 came out only on 3DS, I decided to grab one for it. Big mistake. To this day it's the only gaming system I have ever regretted buying. Disliked it immensely and whenever I played on it I just couldn't help thinking "man, I'd be enjoying this so much more if it was on a console."
Still, it taught me a valuable lesson; never buy a system that doesn't excite you just cos it has a game or two that do.
Got a Switch in October 2017; I decided to wait a few months beyond the launch window, until Nintendo proved it wasn't another Wii U. So far I absolutely love it; if it can manage three more years as good as 2017/2019 it has a shot at dethroning the SNES as my favourite system of all time.
I never felt this drought on the wiiU, it launched with the amazing and big New super Mario bros U, and zombiU was incredible, an experience of a generation, I played it several times, trying the hard mode with only 1 life.
All of this while the console ran all games from the Wii library
Then I even got assassins creed 3 at launch, it was also great and big. I also bought batman Arkham city, it was much better than on my 360 with the gadgets on the gamepad. I even got call of duty on it. Then darksiders 2 was one of the best games of my life. And mass effect 3, even tough I played the first 2 on 360. But I loved the powers on the gamepad and good graphics. Then rayman legends was huge and incredible, then pikmin 3, then Wonderful 101, xenoblades X was huge, bayoneta, Mario 3d world, VC games, monster hunter tri with much better graphics than monster hunter on 3ds, then wind waker HD, then twilight princess HD, splatoon, Mario kart 8, tokio mirage, then breath of the wild, and many more games in between, even need for speed most wanted was good, and splinter cell, deus X, child of light, assassins creed 4
I never felt the drough specially because I also had a 360 and ps4 and 3ds.