What you have neglected is history. The last time Israel pushed people out of their homes, they were not allowed to return. This fact is seared into the memory of every Palestinian for generations. They carry the keys to their original homes to this day. So forgive them for not wanting to abandon their only homes because they want to kill people they have been abusing for decades. Please read your history prior to making unfounded statements and justifications.
The Palestinians have their own version of history which let's just say is inaccurate. One example is they underplay the seriousness of the Arab attack on Israel in 1948 and things like the Egyptian air force bombing Tel-Aviv seem to evaporate from their version of events. They also tend to completely forget about their collaboration with Nazi Germany and the numerous attacks against Jews pre-1948. Really history in the sense of "his story". You can argue Israelis also do this, which is probably correct, but I think you'll find more diverse views in Israeli society and more access to facts. In fact many Palestinians use Israeli historians as their reference (while conveniently not pointing out what parts of their claims are still under debate/disagreement).
It's true that some people were forced to leave after the Arabs started a war on Israel in 1948 and those people generally weren't allowed back. It's also true that many people chose to leave and also weren't allowed back. That said your logic makes no sense to anyone with western values IMO. Your life is more important than your property. I.e. between the option of staying in your property and dying and leaving and not dying the choice for most people in the west is clear. It's true that if they leave they may not be allowed to return. We can argue about the morality of that given they started this current war as well. I think in practice Gazans will be allowed to go back, but time will tell and events will transpire. If anything in practice leaving their homes to allow Israel to focus on Hamas would have likely shortened the war and increased their chances of getting back home and to normality sooner.
I can't really follow your logic who is wanting to kill who and who has been abusing who.