I've come to the conclusion that nearly everyone who PVPs regulary has grown overtly sensitive to records, and the smallest things -- And forgot about simply having fun...

Your opponent controls his/her character, not you. So they won't play the way you wish for the fight to play out. My beest advice is, expect the worst. PVP is full of sensitive people who some, as you already know from experience, play dirty. After a while you should expect something unfortunate to happen again.

Unfortunately, PVP is difficult for the devs to maintain in some ways. You'll have to deal with it in a more passive manner -- find another game, take a break, quit PVP. All thing excessive anger will do you no good. PVP will do that to you.