I get your point, but taken to its logical conclusion, no one should ever stop working, because it costs them money to do so. If my alternative is sitting in f

I get your point, but taken to its logical conclusion, no one should ever stop working, because it costs them money to do so. If my alternative is sitting in front of the TV, or reading a book, or gardening, or... whatever but I choose to do something like this, the cost of that time is effectively zero because that's what I would have been doing with it otherwise. So, by "working" at something I enjoy and that I'm doing by choice, I'm basically being paid to entertain myself.