If everyone waited until the wait until somebody attacked you principal, there would be no killing at all! As discussed to great length before (how many threads do we need!), killing somebody is a staple in GTA. Now its not the only one, afterall the game is a sandbox, you're free to do what you want.
This thread should just be pinned because there is too many too similar to this one. Friendly fire is constantly put forward as a valid solution (which I am all for). If the friendly fire guys want to tell the other player they want to kill them, have a deathmatch or join the PvP lobby.
To suggest nobody would ever fight if everybody avoided first strike is too optimistic I believe. In my own experience, I'm attacked nearing any player pretty much without fail.
In the spirit of this thread, for skilled players who seek a challenge and not a simple revenge melee or a quick K/D point, I wonder if beginning a fight with a kill is the best course of action. It's been stated in this thread it's most efficient to start a fight with bullets, this maybe true when amount of fights or quantity over quality is the goal, but it's ineffective if the desire is for a good skill strengthening fight in my view.
I'm not in the friendly fire off camp, even though it existed in the last iteration and many have campaigned for it, for me, it would ruin the pseudo realism. I've campaigned for a resignation of passive mode as well for the same reason.
With reference to your first point, you misunderstand. I am merely stating the apparent philosophy or code of conduct that some of my fellow gta players on this forum abide by. If K/D is not important to the skilled player then why worry that you been killed in the first place? Your argument is about skill, not simple point scoring. Irregardless of being killed in your PV or a heli or something that has taken some time to obtain, my point is why be upset if he/she is 0-1?
Going up to someone in a car or loitering around someone whilst not bothering to communicate will certainly make the other guy suspicious. In my opinion it is understandable if the other guy has an itchy trigger finger.
I'm in favour of a friendly fire server because I believe the current lobby caters for the average GTA player. Changing this system will hurt the game in my opinion.
You strive for pseudo realistic game as myself and many other players on here of that i'm sure. Are cheap kills not realistic?