Hamas would do it too if in the IDF's position, but that's even more of a reason for us to support Israelis that want lasting peace. Part of sustainable peace would be Israelis supporting anti-Hamas Palestinians. Attacking Gaza doesn't really threaten Hamas' power, but IDF reserves protesting Netanyahu did. If Israelis stop harassing Palestinians, Hamas risks getting replaced by a less fascist government. The goal of Hamas isn't bettering Palestine, but ruling Palestine. Parts of your country being destroyed is preferable to getting overthrown for political entities like Hamas.