Cos these people have been misled by a mislead leader. And I
think these people must be greenhorns. They may have just learn
Islam w/o understanding it inside out,and when a corrupted leader
say any bullsh*t to them,they'll listen and believe everything he
says is right. So this might be the reason why there are suicide
bombers out there.
The leader must have told them,"explode yourself by the name of
Islam and you'll be sent to heaven." which is obviously
again,bullsh*t