I didn't ride today because of the snow. But I ride all winter, barring days of snow or rain, or when there is too much ice on the ground (meaning that I have missed many days this month). I have ridden in temperatures as low as 9 degrees F, most recently last Friday.

I do it; but I don't like it. I lost a lot of weight four years ago; and I took up year-round riding as a means of keeping the weight off. My metabolism is extremely slow; if I didn't need to ride to keep my weight down, I would put the bike away when the temperature got below 50 degrees, as you have done.

Riding should be fun. If it is not fun (and if it is not necessary for keeping in shape and avoiding weight gain), then don't do it -- and don't feel guilty about not doing it.