Speaking personally, it taught me a combination of self awareness (no one is as interested as you are in the thing you are or for the same reasons; don’t spend so much effort trying to change their minds you lose your own passion) and empathy (trying to get interested in the things others are may grow something between you).
I remember being a kid and how people would be disinterested in you beyond anything superficial.
I often wonder how much of this effected my later behaviour.