Winter Cycling

I'm daily amazed to see cyclists out on our snowy paths and roads...

This one often drives down an icy path, then turns onto our street. Occasionally I see him get off the bike and walk it to the road, but not very often.

I see he has winter tires, which are wider than summer ones, I think.

I hope he stays safe. But I do wonder why cyclists do it. I can't imagine loving cycling that much!