The relevance of Eric Hoffer’s book The True Believer to suicide bombing is obvious, and Jason Rubenstein has an excellent post about it. You could do worse than this if you want to understand the character of the suicide bomber:
There is a tendency to judge a race, a nation or any distinct group by its least worthy members. Though manifestly unfair, this tendency has at least some justification. For the character and destiny of a group are often determined by its inferior elements….The reason that inferior elements of a nation can exert a marked influence on its course is that they are wholly without reverence for the present. They see their lives and the present as spoiled beyond remedy and they are ready to wreck and waste and wreck both: hence their recklessness and their will to chaos and anarchy. They also crave to dissolve their spoiled, meaningless selves in some soul-stirring spectacular communal undertaking — hence their proclivity for united action. Thus they are among the early recruits of revolutions, mass migrations and of religious, racial and chauvinist movements, and they imprint their mark upon these upheavals and movements which shape a nation’s character and history.