> Why would someone want to detach their self worth from what they do?
If you derive self worth from results, then you could be disappointed by circumstances outside of your control.
Suppose you set a goal to make $1 million by age 30. At age 27 you're doing great and (through no fault of your own) you are struck by lightning. Because we're playing pretend let's just say your insurance doesn't cover lightning strikes and so medical bills drain a lot of your savings and you cannot continue your career and you do not become a millionare by 30.
If your goal is just the million, then you are a failure. You did not make it. If instead you derive self worth from your values, then you can still be a hard worker (or maybe your value is being self-starting, or entrepreneurial, or something else), even if you are struck by lightning.
> If someone ought not feel a negative emotion in response to doing something “bad”, by what logic can they justify feeling something positive in response to doing something “good”?
I think this section is pretty close to what I'm advocating here. "Good" and "bad" are doing a lot of legwork. What is good and what is bad? I'd wager if you asked people of different religions or ideologies or backgrounds you'd get a whole swath of answers here.
> I cannot conceive of a world view that allows one to feel proud of their accomplishments but does not require their disappointment in their shortcomings.
You might find that you attribute too much to yourself here. It can feel good when you are succeeding and sometimes the system at large is a major contributor to your accomplishments and your shortcomings. As an extreme example, I don't think that someone accomplishing little and suffering under Apartheid is worth less than someone benefiting from that system that accomplishes a lot.
> If someone’s worth is not tied to what they do, then the criminals, liars, frauds, cheaters, etc., of the world are every bit as valuable as our loved ones, idols, great contributors, etc.
To me it would depend why they commit crimes, why they lie, cheat, etc. Someone is stealing bread to feed their family that is very different from someone stealing taxes for a public project. Going back to the Apartheid example, an interracial couple would be breaking the law, and although they are criminals I would not want them to disappear for that. They could have even done horrible things to protest Apartheid and I would still not want them to disappear. If they had rotten values then sure.