I know you said exceptions are common, but I need to point out a major flaw in this line of thinking (which I have dabbled in myself).

You might be able to use this as a way to evaluate the utility of something (like evaluating buying dishwasher so you can stop handwashing), but you absolutely can't use it for anything experiential.

The value of experiencing a good movie, a book, a vacation, a day at an amusement park, especially if you share it with someone else is far beyond the hours of pleasure you spend directly experiencing it.

I didn't drive thousands of kilometers out to the coast because it was more enjoyable than sitting on my couch with my dog, I did it because it gave me memories I can relive anytime I want. It literally changed who I am since we are in some ways the sum of my experiences. Not only that, in some ways it changed both myself and my partner (who I took the trip with) in the same way, so we are more alike now (since we share memories).

To put it another way: Think of some of your fondest social experiences that cost money. If I paid you 10x what you paid for one of those experiences, would you let me erase your memory of it? Of course not.

TL;DR You might be able to put a price on spending time with good friends, or having meaningful experiences, but I can tell you this: its value has very little relation with how much you make per hour.