I think one of the points you guys might be missing is that this particular move was almost unavoidable by Israel. Sure, that doesn't justify it, and on the whole it's a bad move-- I'm sure it won't lead to peace and stability and they shouldn't have come to this point in the first place.
What I think you might be missing is that the people on the Israeli side see the rockets coming down on them and go to the shelter, and while they might be "better off" than the Palestinian, while they may even want peace-- first of all they want it to stop.
"It's not many rockets," "It pales in comparison to what the Palestinians are receiving" may be objectively true but the citizens don't care because their life and their children's life are entirely disrupted and endangered. They would crucify the government if they had just sat and did nothing.
Anyway, this seems like just a bad move from Hamas. I don't see what this will achieve other than deaths on both sides.