At some level I like the starkness of November and December. The trees are bare. The leaves are in damp, disentegrating clumps here and there. In the woods, the ground is muddy underfoot from the incessant rain. When the sun is out the light is different - the shadows are long because the sun is lower in the sky even near mid-day. I'm content being inside, in my office at work, writing, or at home, making a stew or baking stuff.
Running in the winter means running in the dark. This began a few weeks ago when I was completing a run after work, and realised that having my torch (flashlight) would really have been useful. I have a bike-light with bright LEDs, and I power it with rechargeable batteries.