Most Palestinians have not been under Israeli rule, or occupation for 75. Citing 75 years would imply you issue is not with the occupation, but with Israel's existence. The West Bank and the Gaza Strip were taken by Israel in 1967, not 1948. Up until then, the Palestinians in the West Bank under Jordanian rule, while Egypt controlled the Gaza Strip. If you think they were totally benign, you can believe whatever.
And even so, it was not always that harsh of an occupation, and obviously there are differences between how Palestinian are treated and how they fare - in the Gaza Strip, in the West Bank, those who are citizens of Israel (or residents in Jerusalem), also those Palestinian in the diaspora all over the Middle East. It's not like they all face the same conditions as in the Gaza Strip. And the Gaza Strip Palestinians face a harsher treatment due to Hamas's actions, agenda and choices.
I doubt most Palestinian citizens of Israel would happily relocate to live under Hamas (or even PA) rule - even if it was as a free Palestinian State.
Reap what you sow, is exactly what's happening right now in the Gaza Strip.