Really excellent writeup. I think many people are squeamish with the idea of "personal opportunity cost" also because in their experience "personal numeric value"==easy unhealthy way to measure (seemingly) one's worth and to compare two individuals value ("I earn $10/H more so I'm better than him/He earns more so he's better than me"), which can be unhealthy. But it should be approached with as little ego (in the self-worth sense) as possible and as a tool you can use to better self-reflect on your life and your decisions.
Definitely. It's understandable why people dislike these sterile scientific considerations of very real and human problems, but they're incredibly useful. Though romantic notions of things transcending dollar valuation are well-intentioned, they shouldn't get in the way of that utility.
