A former coworker of mine who is not Jewish, visited Israel a few years ago. The pictures and video he took told a very eye-opening story. On the one hand, the Jews have turned Israel into a thriving, growing land. But if you go to the areas occupied by the Palestinians, it looks like a barren wasteland. Litter in the streets, broken plumbing & sewers, wrecked and abandoned cars... you get the idea.
TwoXForr asked the right question - why aren't the other Arab countries volunteering to house, clothe, feed and shelter the Palestinians? If the Palestinians claim Israelis are brutal oppressors, why don't they leave for Egypt, Syria or some other Arab state? After all, their chances to make a decent living and live in good conditions are much better in another Arab state.
Because they're not wanted there either.
Because Arab states don't want to be dragged into a conflict with Israel.
Mostly because they don't want their own governments threatened by the Palestinians.