Well that's a very reasonable concession from you. And many agree that their damage caused to Gaza is unacceptable- even the US wants another means now.
We just must not lose sight of the Israeli perspective. Historically, they were attacked first. They tried invading their enemies, and the world told them to stop. They tried occupying their enemies, and the world told them to let them go. So now they've tried stopping their enemies getting supplies, and they are being told to stop that too.
It is very frustrating from their point of view, being rocketed daily.
All the more reason for them NOT to have cocked this up, of course.