The truth is that "Palestine" is no more real than Never-Never Land. The first time the name was used was in A.D. 70 when the Romans committed genocide against the Jews, smashed the Temple and declared the land of Israel would be no more. From then on, the Romans promised, it would be known as "Palestine." The name was derived from the Philistines, a Goliathian people conquered by the Jews centuries earlier. It was a way for the Romans to add insult to injury. They also tried to change the name of Jerusalem to Aelia Capitolina, but that had even less staying power.
"Palestine" has never existed – before or since – as an autonomous entity. It was ruled alternately by Rome, by Islamic and Christian crusaders, by the Ottoman Empire and, briefly, by the British after World War I. The British agreed to restore at least part of the land to the Jewish people as their homeland.
There is no language known as Palestinian. There is no distinct Palestinian culture. There has never been a land known as Palestine governed by Palestinians. Palestinians are Arabs, indistinguishable from Jordanians (another recent invention), Syrians, Lebanese, Iraqis, etc. Keep in mind that the Arabs control 99.9 percent of the Middle East lands. Israel represents one-tenth of 1 percent of the landmass.
But that's too much for the Arabs. They want it all. And that is ultimately what the fighting in Israel is about today. Greed. Pride. Envy. Covetousness. No matter how many land concessions the Israelis make, it will never be enough.