Lots of reasons, by having sex or praying the wrong way were common. The wrong way being the way some other out group does it. Now we can end the world by doing things like driving the wrong kind of car (but not by flying around the world to "broaden the mind" as in group members like to do that). You can even buy indulgences.
Okay. Answering different questions is one way to signal you don't have an answer to the actual question. We can accept that and close this thread. Thank you for participating.