I have no sympathy for Hamas. Before they took power, there were 15 mortar attacks on Israel from Gaza per month. Right now they're firing 300 per week into Israeli population centers. It isn't working. Meanwhile the Israelis are putting videos like this on YouTube:
You don't get massive secondary explosions like that from hitting apartment buildings full of grandmothers and their cats. You get that by hitting volatile chemicals and explosive materials. Somehow I doubt there are that many fertilizer plants, grain silos, and oil refineries in Gaza.