No, he's just a 30+ year old virgin.
Have to agree with his Dad, sometimes the depressed need to get into another world then the one they have every day.
Japan is not a good idea but as he has interest in the Yukon, send him to teach or even work as a maintenance man in Alaska. A total world different from what is causing him depression.
Everything will be different, the people, the land and he will have to self adjust to living conditions, no time to obsess on his problems of old, new ones to physically overcome. What to do when one comes face to face with a Polar Bear, how to insure his car will start in -30 degree weather.
Depressed people need to get the heck away into a new environment that they must learn to live in.
No time to dwell on their past problems , a place where every day is a new adventure, a new problem to over come.