It’s not leaving behind anything. Hamas started this war because they felt that they could escape consequences by both hiding behind the civilian population and counting on the people they want to genocide to limit themselves from any effective action. They want people like you to demand ceasefires and try to pressure them into returning everything to status quo ante bellum, so they can start the next war, and the next, and the next.
And then when Israel refuses to play that game and attempts an effective military response, people like you blame them for doing so, and even run interference when a news org like the NYT notices a rising tide of antisemitism by talking about how the reporting should both sides this or some fucking bullshit.
It’s a tragedy what’s happening in Gaza, but also entirely predictable. Maybe the people of Gaza should have done something about Hamas before they started this war. But they didn’t, and now, it’s unfortunately time that they reap the consequences of putting genocidal lunatics in power and letting them stay there.