"Lone wolves in incel and ISIS" Because Incel is a terrorist organization just like ISIShttps://twitter.com/HalifaxShadow/status/990028485841178625 …
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Harems, prohibition on masturbation, women viewed as property, capturing women in war for involuntary "wives" encouraged. The rules seem perfectly designed for driving war via sexual frustration of young men with no prospects or status. Almost like it's on purpose. 
For the first generation, that's how it worked. Ambitious tribesmen of the Arabic Peninsula stopped fighting each other, conquered Persia & the Roman East, & shared out their luxuries & their women.
If I wanted to wage war on people unlike me, I don't think I could design better social tech for it. Other impulses can be satiated (e.g. war stops once you've got the other guy's food, if you're starving). Basing resource-driven war around wombs perpetuates it over generations.
Where polygyny is present, (1) many men will be unable to find wives, unless (2) women can be recruited, purchased, or taken captive from other societies, & yet (3) the idea that a successful man has many women at his disposal is likely to have prestige.
Really activates those almonds about the true function of Islamic social tech, doesn't it?
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