In The Zombie Survival Guide: Recorded Attacks by Max Brooks, one of the tales depicts a tribe in the Pacific who, in a sense, worship the zombie virus as a gift for immortality. When the villagers become terminally ill or very old, a raft brings them to the beach of a nearby island, where the pilots of the raft blow a horn to attack the infected and then leave. Images of the displayed "sacrifice" show they do not fear this fate; rather, they look forward to it.
My question is, how does this tribe survive? If the afterlife is a state that one can easily achieve, a state considered to be a good place after death; the equivalent to Heaven even, what is to stop the villagers from allowing themselves to be bit willingly, even seeking out ways to the zombie island? How do you justify zombie worshipers, who look forward to being a zombie, not going out of their way to achieve this goal?