Well the obvious reason is because their people were being killed and they wanted it stopped. They did stop it. It is up to intelligent people to see through the Hezbollah propaganda. and realize that most of those civilian casualties were the result of them using civilians and human shields.

Nasrallah:

"We do not want to...leave our homeland to Israel... Therefore, we are not interested in our own personal security. On the contrary, each of us lives his days and nights hoping more than anything to be killed for the sake of Allah. (MEMRI: Al-Manar TV , Feb. 18-19, 2005)"