One of the Switch's biggest selling points, is the fact that you can pass one of its detachable Joy-Con controllers to a friend for multiplayer games, not just at home, but also anywhere using the built-in kickstand. Many games leverage this feature from 1v1 fighters, to party games, racers, co-op games, etc.
Nintendo really wants people to use this feature, hence why every single marketing material involves 2-player Joy-Con. But how often do you actually use this feature? I find it comes in handy when playing with my sister, but I don't have many friends in my area, so I'm limited in who I can play with.