Where do terrorists come from?

Marc Sageman, former CIA case officer now a forensic psychiatrist, provides interesting data gleamed from 400 terrorists who either tried to or were involved in attacks against the United States:

Most people think that terrorism comes from poverty, broken families, ignorance, immaturity, lack of family or occupational responsibilities, weak minds susceptible to brainwashing - the sociopath, the criminals, the religious fanatic, or, in this country, some believe they’re just plain evil.
Three-quarters were professionals or semi- professionals. They are engineers, architects, and civil engineers, mostly scientists. Very few humanities are represented, and quite surprisingly very few
had any background in religion. The natural sciences predominate. Bin Laden himself is a civil engineer, Zawahiri is a physician, Mohammed Atta was, of course, an architect; and a few members are military, such as Mohammed Ibrahim Makawi, who is supposedly the head of the military committee.

Far from having no family or job responsibilities, 73 percent were married and the vast majority had children. Those who were not married were usually too young to be married. Only 13 percent were madrassa-trained and most of them come from what I call the Southeast Asian sample, the Jemaah Islamiyya (JI). They had gone to schools headed by Sungkar and Bashir. Sungkar was the head of JI; he died in 1999. His successor, Bashir, is the cleric who is being tried for the Jakarta Marriott bombing of August 2003; he is also suspected of planning the October 2002 Bali bombing.
E-Notes: Understanding Terror Networks - FPRI