Riding when conditions are right (both the weather and you) is the best part of retirement in my opinion. Take last week here in Michigan: we had a string of unseasonably warm, sunny days that were perfect for getting the bike out for the first time this year. Only problem (for most) was that they were all weekdays, and on Saturday the temperature dropped 20 degrees with a stiff wind and snowflakes in the air. I would have gone nuts if I'd been sitting in an office on those nice days, but instead I was out riding.

The real danger is a tendency to overdo it a bit, trying to do all my favorite outdoor activities on the same day or something.