I bought a Wii U at the very end of its life-cycle - early 2017, just after the Switch launched. Had been awaiting a price drop that just didn't happen, then through 2016 and 2017 they were really rare to find in stores. Bought a second-hand system with a dozen games for about $175 and have had a blast. It's easily my favorite system of the last decade. Bought a system and 15 games for my dad for Christmas who's spent the last few months sending me regular updates on his Zelda: Breath of the Wild status. Splatoon, Mario Kart, Captain Toad, Bayonetta, Pikmin 3, Batman Arkham Armored, Deus Ex, Shantae, DuckTales, Monster Hunter, Yoshi's Wooly World, Shovel Knight, Lego City Undercover, Xenoblade X, Giana Sisters, Wonderful 101 Donkey Kong Country Tropical Freeze... too many to name. This thing has given me waaaaaaay more than the ~$400 in systems and games I've put into mine. My collection's now just over 80 titles and it's been a blast to play them.
Happy to get the Switch and see these great games given an extension to a larger audience, but I won't be rebuying Wii U ported titles for a couple years I think. Bought two extra Wii U consoles w/tablets in trying to piece together a collection over the years; going to mod one of those. So many thanks for the guidance earlier in the thread!