I like the idea of this thread for periodic encouragement, although tankfully between the winter riding, extreme commute club and other threads there is a lot of practical experience to draw on in this forum.
I started commuting at the very end of last winter and skipped riding in the few snow/rainstorms we had before the weather and my gear improved. This will be the first year riding through the depths of winter. Personally I would rather have dry cold over wet. It was down in the upper 20s one morning and that was fine. I really hate the 40 degree rain days. I haven't decided if there is a minimum temp that I will ride in -- I guess it will depend on how much of my gear list is filled by Christmas.
I'll try to post any revelations I may have as winter progresses and good luck to everyone!!!