You do realize that Israel is the Jews ancestral land, don’t you?
The Jews wanted to emigrate back to their ancestral land.
The real question should be is why doesn’t Jordan, Lebanon, Egypt, Syria, or Saudi Arabia take the Palestinians into one those countries?
The answer is quite simple…
a) they really don’t like them. I have heard other Arabs describe the Palestinians as “dogs”.
and
b) as long as the Palestinians remain in Israel they can and do use the Palestinians as proxies in their desires to see the Jews driven out of the Mid East.