[Thor]

I think a lot of people miss the importance of the youths being attracted to Jihad, the belief in a Moral superiority, that God is on their side. Muhammed only successfully started to spread Islam when he started Jihad and military conquest, this idea is strong in groups like Isis, the idea that the long war of slowly taking over the west with more becoming Muslims, increasing the populations by birth rates.

We have so many cases in the past of nations which at one point Muslims were a tiny minority ended up after many decades as a majority Muslim nation.

The Quran, the Hadiths and the Biography of Muhammad are not just about being a Muslim, but a massive amount of it deals with how to deal with the non believer, how to govern, conquer, etc.. Its a religion that has a template on its own civilization, unlike the other Abrahmic faiths deal so much more with how to be a believer.