Do those preachers that go to college campuses do what they do for selfish reasons?

Think of the motives that these clowns have for going to a public place and performing for random strangers. They’re not like buskers, I mean, they don’t put a hat out and ask for spare change and they don’t get paid for what they do from some other source, so you’d think that without a desire for recompense, their motives are genuine. But are they? Remember, these people have been brainwashed to think that suffering is something for which they will be rewarded in whatever afterlife scenario they have been brainwashed to believe. So going out in public and embarring oneself and getting mocked, jeered and ridiculed by a crowd of random strangers, this is a form of self-inflicted suffering, isn’t it? Do they do this because they think it will guarantee them better treatment in the afterlife?