It is against the code of behaviour in Islam to commit suicide, so I do oppose any kind of suicide, the first time I have heard about this type was from SriLanka or India, so this is not a Muslim behavior and has never been one.
One can understand the level of desperation that Palestinians and other Muslim oppressed people feel, but there are other means of fighting and we see it today with the hit and hide tactics of the palestinians, so no need for suicide bombers since a few rockets can send a powerfull political message, that will be conveyed by the Israeli "civilians = military reserves" to their politicians and generals.
Israelis are cowards in the sense that they need an absolute (at lesst) 5/1 ratio in all of their Armed forces components to enter a battle, but in recent history (2006), even with a ratio of 25/1 (150 000 against 5000, Just ground forces, add to that Israeli airforces and navy) against Hizbollah they couldn't do much, and lost the war with unexpected very heavy losses.
Some might argue that it was a non-conventional war, that will be true since IDF itself adhered to that type of warfare in all its previous wars.