Your point was that Jews "illegally immigrated" and they came from "other places." Same for 600,000 Palestinians: they "illegally immigrated" and "came from other places." They didn't have a state. They were offered a state. They refused a state. If they hadn't refused, they would have a country.
I don't support the current situation. I think the Palestinians need to stop living under military occupation. The problem is they refuse any compromise, which means, eventually, they will have nothing left to negotiate about.