From Human Rights Watch [0]: Israel maintains entrenched discriminatory systems that treat Palestinians unequally. Its over half-century-long occupation of the West Bank and Gaza involves systematic rights abuses, including collective punishment, routine use of excessive lethal force, and prolonged administrative detention without charge or trial for hundreds. It builds and supports illegal settlements in the occupied West Bank, expropriating Palestinian land and imposing burdens on Palestinians but not on settlers, restricting their access to basic services and making it nearly impossible for them to build in much of the West Bank without risking demolition. Israel’s decade-long closure of Gaza, supported by Egypt, severely restricts the movement of people and goods, with devastating humanitarian impact. The Palestinian Authority in the West Bank and Hamas in Gaza both sharply restrict dissent, arbitrarily arresting critics and torturing those in their custody.
For more details, see [1] and [2].
[0] https://www.hrw.org/middle-east/n-africa/israel/palestine
[1] https://www.hrw.org/news/2018/06/13/israel-apparent-war-crim...
[2] https://www.hrw.org/news/2019/01/28/submission-human-rights-...
Note that in the West Bank itself, there are not many opportunities for the children to play together if the parents do not already know each other, because each side is wary of the other. So much of that interaction happens on the other side of the Green Line, with Arab children that do not live in the West Bank.
Assuming this were true, how exactly is it a good thing?