Sex feels good, and can be an escape from the relentless nihilism knowing that a bomb could fall on their heads tomorrow, or a bullet from an IOF officer takes them out.
Then, you have to think about contraceptives. If those aren't abundant, people won't use them, so more kids. Same is true for abortion care, which I doubt many Palestinians have after Israel bombed most if not all of Gaza's hospitals.
You can also buy used or refurbished Fairphones too