It's the best part for those who make it work for them. Look, there is a guy on sally server that drags an r6 healer around with him, he is r5 and picks on r4's. I have nearly made it to r6 and have at least 4 other alts that are a rappelz-item.com/tag/level/">level or two away from r5.
Neither like or dislike pk, it's just part of the game. We dislike that those who complain about the costs of it rarely pk anyone but noobs or low levellers . A perfect example of excess was that race event that gave almost all of us about 9 years of wrath. Do more farming to pay for your fun.
You'd need to kill 105 mobs higher than you to get back to 0 immo. 6 would get you white, but you'd be red again just for turning pk on.