I guess people get passionate about what they know, and what they are part of
In this case, I was more thinking about the people blindly following the "leader" of the cult... Yes, it can be a passion, but usually, that passion is built by the leader and not a "real thing"... I know numerous people that have no idea about anything they are doing, but just follow the person (leader) as they do that for years... It's more like a habit than a passion... And usually, there is no explanation for that, as there are no real (financial) incentives... It's a completely irrational thing...
Cheers!
!PIZZA
That's a very good point. That can seem very irrational.