Happy to report I was in a better mood this morning (and thanks vtjim!). I got some help:

• About a mile from home yesterday a young guy yelled out the car window, "Pedal pedal pedal!". He was around the corner, nothing threatening, and you could tell he was just having a great day.
• Dentist appt. this morning with a new dentist. They had a bike rack in front of their office. Guy who treated me said when the dentist who owns the practice wanted to put in the rack, they all said no one would ever use it. The guy asked me all about commuting and distances, the usual. Felt good.
• No one honked, yelled, cut me off, or did anything else particularly threatening or dumb during the ride today.