Everything: institution, industry, sport, group, genre, etc. has its own history, heroes, villains, popularity, prestige, etc.
To be deeply involved in a given thing provides affiliation, connection, community. It’s important. It feels important. There’s an inclination to overvalue this importance.
To have been part of multiple things diffuses this sense of importance. The limit ranges from apathy to an over-inflated sense of self-importance/hero worship/an overarching belief that it ought to be important to everyone.
I think it wise to be somewhere in between: acknowledging that every thing matters to someone and no one thing matters to everyone. That importance is relative, yet valid.