These dudes are weedhead h-junkies. They don't care
The bigger issue that leads to this is the make-up of their society or more importantly, a lack of hos. Over there there's not gonna just be loose women ready to give it up for the average dude. They gotta lock one down and get married. That requires being in one spot. Whether these dudes feel the need to be married or not is besides the point. Just taking any woman is gonna lead to either conflict with the husband/brother/father/family clan etc. On top of that those same dudes are not gonna have the women just walking around giving it away. Result is, a bunch of bytchless dudes.
This all leads to the segregation of men and women leading to flexible outcomes. Children are unfortunately a vessel on which they can expend their demonic urges.
The US would be better served instead of dropping bombs, air dropping care packages of hos on these bytchless societies