There is no shame in not riding your bike in the snow if you feel it is unsafe or dangerous.

A lot of posters on this forum will ride their bike in almost every road conditions. I do salute them for that, but it may give you the impression that it is a simple thing to do and that you are some kind of second class rider if you don't ride all winter.
In reality it all depends how you perceive conditions. And that has to do with your skills, your bike, where you ride, your willingness to take risks, etc.
I intend to ride thru most of the winter, but I am sure that there will be days I decide to take public transportation based on road conditions.
Duppie