I am the stereotypical gamer - introverted and passive. I only react to people's aggressive behaviors when my safety is at stake. For example when a person gives me a death stare for no reason than his antipathies towards me I usually simply ignore it and act like I'm not noticing it, it is also because I don't like any kinds of conflicts and violence. Apart from school, in my adulthood there have been only two people who made me rage and one of them was my dad, he was a very special person who could anger even the most patient and soft people but I concur.
Sometimes when I encounter assholes and don't react to their sh*t, I come home and start pondering and even have violent fantasies of yelling at them and beating them up which is unhealthy. I want to learn to start reacting little by little, for example I fantasize of telling them 'That's ok, I don't like you either' or something like that, na mean.