Why does my uncle-in law sit at home reading Wikipedia while his wife has to work?

He's a stay-at-home dad by choice, not that he can't find work. This would be fine...except he doesn't do anything around the house. He doesn't wash the dishes, do the laundry, vacuum, heck, the man can't bother to walk into the backyard and water the plants for his wife.

He's got a banking degree, had worked in a bank for over a decade, and speaks 3 languages fluently. It's not like he has a hard time finding work. In fact, his wife's friends have recommended banking jobs for him on numerous occasions, to which he's completely ignored.

As he comes off as a well-spoken, intelligent man, I'm baffled as to why he refuses to get off Wikipedia and find work. Oh and not to mention, he lives less than 10 minutes driving distance away from a bank...in a big city full of jobs suitable for him. All the opportunities are there; why does he not work? Makes me kind of frustrated because his wife is my aunt and I sympathize for her trying to support her household (she, her husband, and her 8-year-old son) all by herself. Every day, people are making money while he sits at home reading a Wikipedia article about penguins, the Mediterranean sea, or whatever.