Capital - WSJ.com

Capital - WSJ.com: "When Princeton economist Alan Krueger saw reports that seven of eight people arrested in the unsuccessful car bombings in Britain were doctors, he wasn't shocked. He wasn't even surprised.
'Each time we have one of these attacks and the backgrounds of the attackers are revealed, this should put to rest the myth that terrorists are attacking us because they are desperately poor,' he says. 'But this misconception doesn't die.'"

Read the rest of the article. It defintiely presents a point of view. It is a bit too generic, though, and doesn't discuss religious ideology, but it does point out that frustration in ability to politically express oneself is a big part of the problem. However, again, that doesn't answer why doctors in democratic Great Britain should turn to terrorists... other than the corrosive sway of Islam.