I honestly prefer Nintendo hardware to PS/Xbox hardware.
Neither Sony nor Microsoft have bothered to keep using motion controls in a mainstream capacity, while on Switch I can enjoy motion input not only in first party titles but also in a lot of third party ones. They're also the only ones with a main controller that can be split, which I also prefer.
For me, it's not a matter of having to buy a Nintendo system to play a handful of first party games, but more a matter of having to consider maybe buying a PS/Xbox console to play a handful of games that aren't on Nintendo.