Arab countries also use Israel to highlight the disingenuousness of America's supposed concern for human rights. Ironically not having it as an ally might make military interventions in the Arab world easier.
So there can be many reasons. Why do you choose the one that, once somehow transferred 5500 km from Bangladesh to Palestine (not sure how much they have in common), puts the Palestinians' struggle in the worst possible light?
26.26% Europe
4.64% Americas
10.75% Asia
14.3% Africa
So no, “most Israelis“ don’t come from Arab countries.
edit: Looking at your history "Peace is not possible on occupied land or in an apartheid state." seems like anything I can tell you wont matter because you have already drank the koolaid
As for your edit, that’s an ad hominem.
from the article: "About 44.9% percent of Israel's Jewish population identify as either Mizrahi or Sephardi, 44.2% identify as Ashkenazi, about 3% as Beta Israel and 7.9% as mixed or other"
This is from 2013, and there has been a lot more mixing since then.
Your exact comment:
> ” Most Israelis come from Arab countries(because they were expelled)”