This article makes sense:
http://www.sciencedaily.com/releases/2007/06/070620115415.htm
....“But then suicide bombing is in actual fact very rare. Rare, that is, when it is remembered that extreme religious groups make up only a tiny fraction of religious groups as a whole, and 99.99 per cent of those groups are in fact peaceable.
“Statistically, then, finding one or two people willing to make such a sacrifice is incredibly rare. However, given the nature of suicide bombing, it only takes one or two.”
The attractions of intense solidarity don't only apply to fringe Islamic sects, but also to other extreme religious groups, Dr Stevens said. Many members of other such groups — from the Moonies to the Branch Davidians — explain their decisions to join, and as importantly to leave, in terms of the costs and benefits of participation rather than in the context of a 'brainwashing' process.
Dr Stevens also argues that contrary to popular opinion, poverty, isolation and lack of education are not typical features of the bomber profile. ...
Likewise it is a common misconception that suicide bombers are mentally ill or irrational, Dr Stevens argues — because it would make them a liability to the terrorist groups with which they were involved.
......
The WTS minimises the cost of leaving to the new recruit, and then swiftly wises them up after baptism. As you all know, the more invested in the WTS, the harder it is to walk away. I must think more about this cost-benefit rationale.
