"Palestinians lived in the area for about a thousand years (ignoring descent from the Hebrews etc) whereas most of the Israeli Zionists emigrated in the 19th and 20th Centuries. Only a moron would claim that the Israelis have a strong claim to the land than the Palestinians."
Oh, really? How many peoples in the world can point to a 4,000 year history in their native land? The Jews can.
"Palestinians were the main native ethnic group of Mandatory Palestine... the clue is in the name, idiot."
Oh, really? When the Roman emperor renamed the land of Israel, Palestine, literally "the land of the Philistines", he was trying to erase the history of the Israeli people. The Philistines, who came from the Mediterranean and were not even Arabs, went out of existence as a race long before then.
During the centuries of different conquests and rulers in the land, there were always Jews there. The term "Palestinian" referred to anyone living in the land even up until 1948, wherefore many Jews had "Palestinian" in their passports. But during all the centuries, there was never a nation of people with a specific Palestinian identity or culture. Many Jews came in the 1800s and early 1900s, yes, most of them to escape anti-Semitic outbursts in Europe and Russia, but most of the grandfathers and grandmothers of the people today calling themselves Palestinians also came during this time, from Egypt, Jordan and other neighbouring countries. The UN even granted a special refugee status meaning that an Arab who hade been in the country for five years prior to the birth of the state of Israel, was a Palestinian.