- It's the Jewish homeland. The Jewish people
are the native population. The Arabs are the invaders. There are some Arabs who have lives in the region for a long time but many current day Arabs in the region are immigrants from Egypt and other Arab countries.
- The Palestinians are not "defending themselves".
- Your statement about the Jews in Arab countries is patently false. You're just repeating propaganda. Jews were discriminated and persecuted against everywhere when they lives under Arab and Muslim rule. You should talk to Jews whose families come from Lebanon or Syria. Do you know how many Jews are left in Syria? The Palestinians and Arabs boast they treated them better than the Europeans that massacred them or forced them to convert to Christianity. https://en.wikipedia.org/wiki/History_of_the_Jews_under_Musl...
The fact of the matter is that Arabs living in Israel under Israeli rule have the most freedom of any other Arab in the middle east. They're also amongst the most prosperous. To contrast in all Arab countries Jewish people have been ethnically cleansed.
It wasn't just the British who acknowledged that Israel is the home of the Jewish people. It was the league of nations and later the UN. I.e. everyone. The Jewish people were forced off this land (including by Arabs) and their right trumps the right of the Palestinians. Those that came there before 1948 (and during Ottoman rule) joined Jewish people who have lived there forever, are legal immigrants, and had to buy their land back (including places like Hebron or Jerusalem) where they were forced out. There was also a Jewish community in Gaza by the way, also ethnically cleansed.
Who gave the Ottoman's who came before the British any rights? Why aren't you challenging the right of the British to give Jordan to the Hashemites who came from Saudi Arabia? Or any of the other countries that France and Britain carved out? Why shouldn't the Kurdish people have their own country? Or the Druze? But OK. The white people from the Americas can return to Europe (+ all the more recent immigrants from everywhere). Same for Australia and New Zealand. The Arabs can return to Arabia. The Jewish people will return to their home in the middle east. And then according to you everything is now "correct".
EDIT: One should also point out that it's extremely well documented that this is the historical homeland of the Jewish people. I.e. whoever lived there knew that. Everywhere you dig you find synagogues, coins with Hebrew writing, and other artifacts. The Palestinians have zero documented connection to the region other than the fact that they happened to live there in 1948 (which I am not disputing). I'm sure there are also Palestinians with lineage going back to the Israelites. There are also immigrants etc. That doesn't really change anything. The claim by Palestinians that they are descendants of the Canaanites or the Phoenicians is a joke. Clearly in 1948 they were Arabs with the same identity as people living in Egypt, Lebanon, Jordan and Syria. No national identity whatsoever and no particular connection to the region we call Israel. Generally speaking. (I'm sure some had stronger connection to the region).
The other thing is this really doesn't matter. Today Israel exists. Israelis are not going anywhere. If you want to fight for justice go fight for the aboriginals to get Australia back or the first nations to get Canada back. That's a real story and your chances of success are better. Palestinians need to change their thinking here if they want an end to violence. Which apparently they do not.