I commute year round with good weather bikes and dedicated winter bikes. Mountain bike on the weekends, 26er and 29er dual suspension, plus a fat bike for year round riding ( dirt and snow) Plus studded tires for all my mt bikes. Also a touring bike which I use during the warmer months. Plus some of my commuters are set up to ride dirt on the way home during longer daylight times. And a tandem cruiser for ice cream runs. I find most serious bikers have many bikes and multiple ways to pedal.