What is up with Israel's terrorism and DISPROPORTIONATE attacks (also on civilians)?

Killing only becomes disproportionate if you keep killing your enemy after they have surrendered. I don't know at what point this conflict becomes disproportionate, but Hamas is still fighting so they aren't there yet. Even if Hamas does surrender, it will only be to regroup and build more missiles. The fact that Israel can obviously invade at will and inflict damage until they decide to stop should be a deterrent to these Arab countries, but your hatred is so overwhelming that it isn't. That is hardly Israel's fault, and their response, to date, has been appropriate and more restrained than is really necessary.