I agree completely. Still it's Hamas that fucked things up in Gaza. The enemy of all peaceful people is nationalism and authoritarianism.
In my view Israel's blockade and occupation of Gaza was illegal. But Gaza is now a failed state and it has neither the resources nor ability to make itself safe or to govern itself.
Israel, as its neighbor, has now a superior claim, by way of irredentism. Terrorists don't get to have their own state. Failed states don't get left to their own fate, neighbors have to help.
E: Wow, me and this other reply to your post both said nearly the same thing.