Yes, I think Mr. Wonderful is depressed. I've thought that for a really long time. In fact, he has many family members who I think are walking around without a diagnosis and/or treatment. Furthermore, they think they aren't depressed.
Oddly enough, his father is a classic example as well as his Norwegian grandmother (her untreated depression was legendary in the family). His grandfather emigrated from Norway when he was 16.... his grandmother had moved to the US when she was a baby.
He does recognize that he has Seasonal Affectation Disorder (SAD). He seems much more happy during Daylight Savings Time and during the summer months. Living in Colorado has helped, because we have many sunny days all year long (more than San Diego).
"There are only 2 ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle."