If you can't win by being nice, then don't be nice.

I don't see the point in playing a game where we're expected to roll over and die the moment someone with more preps, better equipment, and more time to get them comes at us.

Fuck that. Gank the living shit out of them.

Or wait, if I'm playing a healer and fighting a bard I have no chance in killing, I should just 1v1 him every time and let him rape me. If I'm playing a 700 hp iron vuln dagger spec with no prep knowledge fighting a rager axe spec with deathblow and bloodthirst, I should just roll over and die. Right.

If you can kill someone one on one, too fucking right you should. If you full loot him, get prepared to deal with the medicine you dish out. PK is not a personal thing most of the time, I enjoy fighting one on one and losing occasionally. But when I get sacced or get nearly full looted, especially with stuff that the other guy can't use, its clear that he's only doing it to be an asshole. I am perfectly willing to gang in retaliation, so that the asshole gets a taste of his own medicine.