I'm in a unique position - i'm collecting all switch bundles brand new in box, so i have 5 from day one and one for mario odyssey bundle.
The breakdown is:
one for me (latest fw)
one for my wife (i think she's at about 3.1 for odyssey, she doesn't use it all that much)
one for eventual h4x (1.0 neon)
two release units for collection (1.0 neon, 1.0 grey)
one mario odyssey bundle for collection (assuming 3.1 FW but haven't opened box to check)
obviously not really concerned about piracy for the h4x one i have saved, more just homebrew usage as i'm collecting all triple a titles in physical format anyway.
Editing to add: in australia there has never been a switch shortage/sold out factor, so i'm not depriving other people with my collecting habit.