Naraka-gati, the Hell Realm
As the name suggests, the Hell Realm is the most terrible of the Six Realms. Hell beings have a short fuse; everything makes them angry. And the only way hell beings deal with things that make them angry is through aggression -- attack, attack, attack! They drive away anyone who shows them love and kindness and seek out the company of other hell beings. Unchecked anger and aggression can cause rebirth in the Hell Realm.