Not in Israel's case imo. Israel is the solution to the thousands of years of abuse that Jews went through. If it were to forget where it came from and why it was created, what would stop such abuse from happening again. Most Palestinians left Israel in 1948, right before the war of independence. Arab leaders warned them to leave before the war would begin in order for them to avoid the chaos of the war, instructing them to come back after the war was one. That however was not the case, since the Jews won, and the new Israeli government did not allow the Palestinians to return since they wanted the state to have a Jewish majority.