You are right there are things they "value".
One thing I have noticed was that when all the shooting is about to start, the higher ups move their many wives and children to a location away from the battle, if they can afford to do so.
So, no matter how zombie-like these Islamofacists are they have some feeling for immediate family.
That's why complete annihilation maybe something they understand and want to avoid.
The true heads of Islamic terrorism are the wealthy individuals who comprise the Golden Cahin. They are the money men who finance it all. Eliminate the money men, and it all withers and blows away. The problem is that the money men include members of the Saudi royal family, as well as prominent members of the ruling class of other OPEC members. A midnight flight of B2 bombers lobbing JDAMs thru the bedroom windows of these money men, in Saudi, Oman, Kuwait, etc, would communicate that there would be no sanctuary for them