[freeflight]

>The other two are completely irrelevant to anyone but yourself.

Are they really tho? To know where you are going, you first need to learn where you came from. This also applies to other humans, knowing a bit about their background helps you empathize better with them and understand their reasoning better.

In that regard "job" has become the new class to a certain degree. Tell somebody what you are working and many people will base their whole idea about you on just that. Even tho you might not even like working that job and are pretty much forced to do it due to a lack of better options.

This also has the effect that specialization is considered the peak of knowledge, while jack-of-all-trade skills are increasingly undervalued. You either spent large parts of your whole life pursuing that one specific thing or you are considered a screw-up by many people.