I am from Vector. Hostile, non-carebear - whatever. And it should be frimly pointed out that the two formats (hostile and non) are completely and radically different. The way you play, the way you think are always considering when i run through this door will there be a big red there to kill me. Without sneak coat i pity those who must level up. However, back to the point.
PvP on our server is a matter of territory. One org will be in an area and eventually another will find this and try and take them out. Now for me (i am only 41 but have been PvPing with the 50's since 27+ [hacker - duh]) when i see a sea of red the only strike i can make against them is to kill someone before i get raped - and believe me if you try and take on even a higher level in the midst of a sea of reds you will get knived, hacked, shot and spat on within moments you'll be hitting reconstruct. So always i use sneak coat, and kill only those i can destroy within the 2 hits i have before i am forced to run. A bonus of this is that on occaision i am followed and am then able to kill my pursuer far from the help and protection they were enjoying. Occaisionally there are zerg wars where it will be mass Vs mass but i stay out of that. I am an easy target and in those situations my team will be far to busy to help me live - and i don't like dying.
So, to finish, I happily kill lower level reds when they are in a PvP area (mara c generally). Ganking? yes - but perhaps the only blow i can strike in the war effort. Zerging, and calling reinforcements when being outfought, is inevitable. So kill em but don't hang around. And in turf wars over areas like mara - it is dirty and nasty and the stuff of life.
One more thing. The 3 org system is brilliant - it keeps things interesting and the fleeting alliances made whilst fighting superior numbers is vital to community. At sometime our enemies might need to be our allie - never forget. Oh, and the 16 you ganked, he will get to 50 one day.