A very detailed analysis of suicide bombers can be found at:
http://mitpress.mit.edu/journals/pdf/wash_27_3_67_0.pdfExcerpts:
"The war in Iraq has energized so many disparate groups that
the jihadist network is better prepared than
ever to carry on without bin Laden."
In truth, suicide terrorists on the whole have no appreciable psychopathology and are often wholly committed to what they believe to be devout moral principles. A report on The Sociology and Psychology of Terrorism used by the Central and Defense Intelligence Agencies (CIA and DIA) finds “no psychological attribute or personality distinctive of terrorists.”39 Recruits are generally well adjusted in their families and liked by peers and often more educated and economically better off than their surrounding population.
Overall, suicide terrorists exhibit no socially dysfunctional attributes (fatherless, friendless, jobless)
or suicidal symptoms. Inconsistent with economic theories of criminal behavior, they do not kill themselves simply out of hopelessness or a sense of having nothing to lose. Muslim clerics countenance killing oneself for martyrdom in the name of God but curse personal suicide.
“He who commits suicide kills himself for his own benefit,” warned Sheikh Yussuf Al-Qaradhawi (a spiritual leader of the Muslim Brotherhood), but “he who commits martyrdom sacrifices himself for the sake of his religion and his nation. …
he Mujahed is full of hope.”43 Another reason that personal despair or derangement may not be a significant factor in suicide terrorism is that the cultures of the Middle East, Africa, and Asia where it thrives tend to be less individualistic than our own. These cultures are more attuned to the environmental and organizational relationships that shape behavior and are less tolerant of individuals acting independently from a group context.44 Terrorists in these societies also would be more likely to be seeking a group, or collective, sense of belonging and justification for their actions.