Comment by tarokun33

Even setting aside ethics and faith, from the perspective of the norm of reciprocity, being kind to travelers (or those who appear to be) is effective in winning them over as allies. In my personal experience, the more aggressive a person is, the more likely they are to be hyper-vigilant or starved for kindness, meaning they tend to be deeply moved by even a small gesture. Of course, genuine psychopaths in confined environments are the exception. This is an extreme case, but a certain murderer (from a real incident in Japan) stated : "I just wanted to kill anyone. So, I stabbed the person who ignored me when I greeted them."