NPD's Matt Piscatella has shared an interesting tidbit about Switch owners here in the states.
According to NPD's Games Acquisition Monitor, at the end of Q1 ballpark of 70% of people in the U.S. that owned a Switch also owned a PS4 and/or an Xbox One. Cross ownership across all 3 consoles is pretty high compared to prior gens. Each system is differentiated enough that a big chunk of people that are into console gaming own multiple systems. Now arguing primary vs secondary doesnt make any sense. Each box does its own thing and each does it well.
I have a Switch, PS4, and Xbox One. I'd be interested to hear what you guys have at home. Is Switch your only current-gen system, or do you have others under your TV?