From the other side Israeli Jews have been constantly taking Palestinian land for over a century, and the backdrop of those "serious offers" was the consistent expansion of Settlements on Palestinian land. If you were the Palestinians, would you have trusted the Israeli's saying they were going to give back your land even as they built new houses on it?
I fully understand the historical aspirations (and need) for a Jewish homeland, even after the holocaust Jews spent years in refugee camps since they literally had nowhere to go.
But from the Palestinian side, invaders/colonizers came and took their land, when they predictably fought back the invaders took more, and now the invaders have established a long term pattern whereby the invader is regularly kicking Palestinians off of their land to build new Settlements.
Recall, the reason that Israeli security was so light around Gaza during the attack was the soldiers were relocated to the West Bank to contain unrest over expanded Settlement construction.
That pattern is going to create a lot of animosity.
I can only see three resolutions to the conflict.
First, is the two state solution. But that requires not only halting the construction of new Settlements and restrict or even freeze the expansion of existing ones for good. And you're probably not seeing the Palestinians trust it until you've maintained this for at least 10 years. That sounds extreme, but in reality it's just "stop taking other people's stuff".
Second, is what seems to be the current plan, keep expanding Settlements and pushing the Palestinians into smaller and smaller areas until you're literally left with just a couple Gaza like enclaves with all the Palestinians and then you want a few generations for emotions to die down (if you don't think of a way to literally push them into another country).
Third, Israel miscalculates in some serious way. For instance, they turn the Arab Israeli minority hostile and alienate too many Western allies, and suddenly moderate Jewish Israelis start leaving. If that keeps up people start getting scared and more folks start leaving, and at some point enough leave to top the balance and Hamas gets its wish and Israel ceases to exist.
Personally, my money is on Scenario #2 and that certainly seems to be the Israeli government's plan, unfortunately the path to that contains a potential detour to #3. This is why Hamas and Netanyahu so often find themselves objective allies. It's in both of their interests to keep the rockets flying in order to prevent any peace.