Things I love about walking in the dead of winter: no sunburn, no heat stroke.
Things I hate about walking in the dead of winter: ice. ice. baby.
For real. So Much Ice!! A 5 mile walk feels like 20. Uff Da. Walking like a penguin is tough work!
Other than the constant risk of falling, the other downside to walking on icy sidewalks is having to look down instead of up and around at all the beautiful sites. But man that cool air is lovely.