That depends on which era of history you are looking at. Basically there have been barbarities all the way down.
“It would be logical to think that only people without hope for the future would become suicide bombers. But I think there is more than that going on here. It is anger and spite as well. It must be a vicious and deep anger that leads people to hack other people apart and then blow themselves up. Religion is just the cloak it hides behind. I think ISIL is a death cult more than anything else. But why, why, do young people from stable homes and peaceful areas travel to join them? What on earth is the appeal of these monsters? What is the appeal of pain, death, and destruction?”
I think the appeal is that it does give them hope for the future. Their future in heaven, which they think will be set by their heroic martyrdom while dying in a jihad. And that is where their twisted view of Islam comes into play. Most other people, a true believer would think they would ensure a place in hell for doing something like this.
And I agree, it certainly isn’t economic, that is just an excuse people use to justify it as actually being wealthier countries fault. If we just would give them more money, this wouldn’t happen. We are so short sided and selfish, look what this causes. I don’t understand that kind of self loathing.
Three bombings in the KSA:
http://www.aljazeera.com/news/2016/07/saudi-arabia-qatif-explosion-160704165007140.html
http://www.cnn.com/2016/07/05/asia/ramadan-violence/
Two killed only the suspects (one near the US consulate in Jeddah, the other near a Shia mosque in Qatif). The third killed four security guards at the Prophet’s Mosque in Medina, where Prophet Muhammad is buried.
Darwin theory??
“Darwin theory??”
One might think that, though unfortunately they seem to want to bring as many innocent people along with them.
This one. The one in which you can find a massacre committed in it’s name most any day you bother to check the news.
The Darwin theory refers to the guys that blew themselves up, and no one else
Bummer they aren’t alll like that 
No lack for groups who thought there was, just from my lifetime. From memory: Red Brigade, Shining Path, IRA, etc.
Other than the IRA, faith wasn’t a commonality. Didn’t translate very far, anyway.
ISIL as a death cult isn’t hard to believe, as is the link between it’s converts.
Fair, but the tribal differences seem to be the overriding driver of the violence. Sunni groups like ISIS seem to especially love killing Shiites and other Muslims. Ditto for the Shiites.
I mean they’re all Muslim but that doesn’t make them safe, usually.
ISIS is the group which has declared a caliphate. All the Muslims are supposed to go and join the caliphate now, and the ones who reject it are the enemy of the caliphate, regardless of their particular brand of Islam. The caliphate also needs land in order to be a caliphate, so expansion is a necessary part of the plan.
This strikes me as a political stand more than a religious one, though I get that the issues are intertwined. If you reject the caliphate because you don’t like the leaders, for instance, you’re an enemy, “good Muslim” or not.
http://www.huffingtonpost.com/dean-obeidallah/isis-defeat-muslims_b_10825028.html describes how Daesh has killed far more Muslims than non-Muslims.
I think it is a too simplistic view of the situation when one says ISIS has killed more Muslims than non-Muslims. What’s happening in Iraq is mostly sectarian conflict Shia vs Sunni. In Dhakka the terrorists targeted non-Muslims. They were thoroughly tortured first before getting killed. Muslim wirters on Huffington Post seem to want sweep this fact under the rug.