I was actually shocked to see that so many people join them. Its possible to see a couple of people with such belief but I get shocked that the people joining them have no logical basis , and do not even realize the cause.
Perhaps some of them think they have better chances for survival with ISIS, some of them was extremist from the beginning, others may think better joining ISIS then get killed by them.
Well Survival might be one reason. But they would have to be too cold to actually be able to kill people like that. And since I am sure its not just one person directing all the killings, them doing it all autonomously is unlikely if they joined them for survival.
As I heard only the first few are hard, then ppl "get used" to kill others, not to mention that constantly "ego-boosted" groups tend to do things what the individuals in that group wouldn't do on their own.
