Humans are logical and rational, but can be illogical and irrational in the same breadth. Sometimes people are configured less trusting, some too trusting, ever

Humans are logical and rational, but can be illogical and irrational in the same breadth. Sometimes people are configured less trusting, some too trusting, everyone is trying to figure out the world. Many of the things you mention, that there is some bigger power and belief being bigger than the reality, could also be applied to religious people which can also be troubling in many extreme areas such as cults or killing people that don't believe. Terrorism is largely a religious side effect of some belief that is avenging against a conspiracy. Conspiracy in a way is a religion, but some conspiracies are true and most people have seen humans be devious in small groups even at their workplace or in business, so it goes back to trust/belief as some challenge authority, some trust too much. Conspiracy has ranges just like religion but they may come from the same place, people trying to simplify their world with many unknowns or to deal with emotional issues, standing in society, trust in authority or too much confirmation bias. All of this just goes back to the irrational side of humanity and the human condition where people are figuring out their world, anything that doesn't have a least a good hold in reality, solely based on belief over common trust and facts, can go off the rails.