Everyone has heard about the 72 virgins if a Muslim dies as a martyr.
What is little known this: if a Muslim dies in an ordinary way (e.g., at home in bed of old age) his soul goes to Barzaq "the Veil" and sits there for ages and ages and ages waiting for the End of the World and Judgment Day, when Allah will weigh the good deeds and the sins of each soul in the scales, and send him to Hell or to Paradise. While in Barzaq, the soul is unsure of his fate, and can do nothing but wait and wait and wait.
... that is, unless you're a martyr. Martyrs go straight to Paradise. Martyrdom wipes away any and all sin. They skip past Barzaq, go through the express checkout lane, and enter immediately into Paradise, to spend eternity with Allah and the prophets.
That is a huge sales pitch. Frankly, I'm surprised there aren't more takers than we've seen.
No wonder there is interest in becoming sucide bombers, it is an easy out or a fast pass to the Muslim paradise.