As if this were ever an option for them. Not quite. They were driven from their land when the UN took the land they were living on and created Israel. They have been with out a say, without a vote ever since.
Actually, when Israel was created, the Palestinians were given Jordan.
Unfortunately for them, they were such pains-in-the-backside that the Jordanians threw them out.
Even their fellow A-rabs can't get along with them.
This is simply a lie. The UN never took anyone's land. The Partition resolution of 1947 divided the former British Palestine mandate between the resident Jewish and Arab populations according to who was living where at the time.
Many (but, again, not all) of the Palestinian Arabs lost their land in 1948 when they joined the surrounding Arab nations in an all-out assault on Israel, as the combined Jewish territories had designated themselves when they declared independence.
Some Arabs were driven out as a security measure after they repeatedly attacked both their Jewish neighbors and their fellow Arabs who wanted to live in peace with the Jews. Others fled the fighting, and some left after their leader, the Grand Mufti of Jerusalem, Haj Amin al-Husseini, had assured them that they could return and pick up the loot as soon as the Jews were killed or driven out. The Grand Mufti's promise has yet to be fulfilled but many, obviously, are still hoping that it will be.
Al-Husseini, btw, was an admirer and supporter of Adolf Hitler, visited Hitler during the war, and helped organize the Muslim SS division in the Balkans. The Grand Mufti had blonde hair and blue eyes (fairly common in the Husseini clan) and this probably helped his popularity among the Nazis.
Instead of hanging him as a war criminal, the post-war British Labour government (in its infinite wisdom) restored him to his position of leadership in Palestine. This was not the last time that western lefties have sold their souls to appease what passes for Arab opinion.