As I get older I am beginning to understand the lure of a warmer climate in the winter. A recent trip to Tempe for an FHWA workshop confirmed that I could get used to 65 degrees and sunny in the dead of winter. It still isn't right for the holiday and New Year's Eve, but right after that it would be just fine.
There was a lot of cycling surrounding the campus of Arizona State University. I was surprised at how little helmet use there was, but I guess I don't recall wearing a helmet when I was at Oregon State either and Corvallis was such a sleepy town, one could bike as fast as the traffic. Interesting to think back about the bicycle facilities and how little you need when you're a university student.