Look, I agree that Isreal needs to do more to protect Gazan citizens. And to deal with the present situation you need to ignore about 2000 years of history. With that said, when your neighbor is a terrorist group with the EXPLICIT AIM of eradicating the state of Israel, and they launch indiscriminate terrorist attacks on you, and deliberately hide among civilian populations to maximize casualties, what are your options except a land invasion to remove them from power, even though you know there will be civilian deaths?