Having a villain to demonize allows for much more flexibility of action. Israel is free to reject peace, expand west bank settlements, and ignore American advice all thanks to Hamas and a few stray Qassams. The problem for Israel is to keep Hamas on the attack while appearing to want peace. In the past this has been accomplished by a liberal dose of Palestinian civilians killed by the IDF while at the same time, avoiding talks with Hamas because they are "terrorists". Never mind the fact that Israel has always killed far more civilians than Hamas, over any period of time that you care to name. Hamas is such an important element of Israels strategy it makes you wonder if the "impossibility" of stopping the Qassams is as impossible as Israel would have people believe.
French investigators confirm wing part is from Flight MH370 (AP)
from the article: Report: Hamas wants cease-fire with Israel in the Gaza Strip