I find fighting to be the most fun aspect of the game,but to each his own. When I get really bored I do some clan wars (ffa, or just joining a random group there), castlewars, pvp worlds, or I just go kill a monster that I like(I find it to be less boring to kill monsters that look cool and are not annoying). I also like doing slayer tasks. The randomness of assignments keeps me from getting bored. I also get very excited upon reaching a slayer lvl that allows me to fight a new monster. When I really don't want to kill monsters or players, or I run low on food, I go fishing. It relaxes me.