You didn't answer the question
You said "Right. What's mine is mine and what's yours is mine too!"
Why don't you ask the Arabs that question? After all they already received 80% of the Palestine mandate in 1921 as Jordan and they already have 22 countries.
What makes these lands Arab lands? In 1947, they could have had even more, but the Arabs wanted everything.
If you read any travelogue account of a trip to the Holy Land in the 1800's they all say that the land was desolate where were all those Arabs? How come the population of Jerusalem (what is now East Jerusalem) was overwhelmingly Jewish in the early 1900's?