Not my sense of comfort.
> as long as the roads are clear or your bike has appropriate tires.
I live in a country where we have snow in winter, at least casually. I think driving safety is severely affected when driving single-track? Wouldn't ride my motorcycle in winter either.
That said I live in a snowy country and ride a bike. I absolutely wouldn't ride a motorcycle. Speed is by far the largest reason. On a bike, you can see black ice before you hit it. You can run a foot along the ground for extra traction. You can get out and walk and push your vehicle. You can just jump off if shit really hits the fan.
That said, I also ride slowly when the roads are poor.
Where I live, it's not usually safe to ride a bike because of snow clearing. We get huge snowbanks and there is no safe place to ride. I'd be riding if I could though.
We do have off-road trails that are groomed for fat bikes that are a lot of fun. It's a nice alternative to downhill skiing or snowboarding which can get pretty pricey!