Because the Palestinians deserve their own country with its own water, electricity, and food supply.
Israel's Far Right government has repeatedly sabotaged any attempt to the two state solution.
But they sure as shit don't want the Palestinians as citizens with equal rights either.
So the entirety of Netanyahu's government has been trying to slowly force them out of their own defacto nation while not negotiating in good faith. Hamas, of course, depends on this to stay in power.
Unfortunately, under Trump (of fucking course), all the progress to a two state solution that had been made under (of all people) George W. Bush and Obama was dissolved as he gave Netanyahu blanket permission to go forward with settlements and covert support to pushing them out the entire way through. His "Middle Eastern Peace" being essentially "Don't give the Palestinians any guarantees for anything and let them be forced off their land."