Xian door-knockers -- why do they bother?
I know Invisible Sky-Man says, "Go out and share the good news with errbody!" but really, why?
Does spamming doorways get them some actual results, some infinitesimal percentage of people who say, "After-death sky-cake and a reason to refuse life-saving medical procedures? Sign me up!"
Do people leave their churches after realizing that hey, these aren't beggars in search of bread, they're just ordinary people with pissed-off dogs?