Saudi Arabia has the reputation of being the worst though they keep their defective kids in the “closet” away from scrutiny.
The Arabs know the problem, yet they persist in it.
Distrust of “outsiders” is usually given as the reason for such stupid tribalism.
And considering that the “outsiders” are other Muslims, the distrust is justified.
Years ago a Syrian lady asked my mother why I didn't marry my first cousin, whose family had a lot of money.
My mother said ‘We don't do that’.
The Syrian lady couldn't understand why we let all that money go ‘out of the family’. Money is part of it as well.
It is much more than that...Think seriously about islamic laws concerning women...they are slaves period! They have no rights and are the spawn of the devil....great way to start out life.
If a father has any love for a daughter there is only one way to oversee somewhat her safety and that is to keep her in the family where he can cause enough trouble to keep her husband treating her well...If he marries her outside the family he can not keep her safe...so any father who has a smidgen of love for a daughter under islam must keep her close.
Like usual islam is the problem and the cause of the evil in the muslim world. It is a religion that needs wiping out for nothing good and wholesome springs from it.