Because that's what I did.
Extra Set of Joy-Con – $79.99 Charge Grip – $29.99 Extra Dock – $89.99
Since those are the three accessories I wanted with my Switch, it didn't make sense for me not to just buy a 2nd Switch for the extra $100. That way my wife can have her own and we can just use the extra dock as a charging station when we aren't using it.
Just curious if I'm the only one.