All the things we hate about biking in the winter - cold, dark, snow, etc - I think I would trade for the unexpected annoyances of my first season commuting in warm weather:

* scores of unhelmeted, uninformed hipsters who seem perfectly content to ride the wrong way in bike lanes, to blow past you at a red light and through intersections

* sweat, sweat, and more sweat. especially on my brow, which briefly makes me want to join the ranks of those who refuse to wear helmets (only briefly). carrying a change of cycling clothes for the way home is no treat either

* joggers, walkers, dogs on the leash, and parents with strollers who feel it is their Divine Right to place themselves smack dab in the middle of the multi-use path and who are impervious to both my bell and my yell because of their earbuds. or maybe they just pretend not to hear me...

I can't wait until the chill is in the air again. in what parts of the country does it never get above 50 degrees? I may move there...