I built up a dedicated winter bike for each member of my family. In upper Midwest, "winter" means road salt season, and it's a long winter. The salt is tough on bikes. First big rain washes away the salt. Then the bikes get hosed down and put away under an awning in the backyard. That way, I'm also not changing out the snow tires.
I don't ride recreationally during the winter: Just commuting and shopping. So I don't need my sporty bikes. For exercise during the winter I prefer walking and cross country skiing. The winter bike is pretty klunky. It's got an old 3 speed IGH with coaster brake and a shifter that's easy to operate with ski gloves.