I think only some people have some specific calling that they're happily stuck with for the rest of forever, some people bounce around between several loves as their lives evolve, and some people are just contented without necessarily having any particular "passions" at all.

I am defining "calling" and "passion" as things you feel particularly driven to do/achieve despite everything else that's going on so slightly different from a hobby which can also be a passion but usually seems relegated to "spare time" XD

The gamification stuff works on constant dopamine release because well if it's not "fun" how else are they going to keep people scrolling so they can keep shoving ads nobody cares about in their faces? XD