Ever wonder why?
It's because it's always apples and oranges. There are no equivalent situations. Even identical twins growing up in the same house have different aims and different sets of problems to solve.
I think we all know that at a gut level. But it's easy to forget, especially in the case of self-judgments.
The practice of measuring is "odious" because it's always inaccurate. When I do it, it simply distracts me from doing the things I need to do while here on Earth.