Willy Boy, Chill! Ganking comes with the Territory.
I once witnessed a Horde raid on Raynewood Retreat which left me the only Alliance character standing because I refused to raise my PvP flag. On PvP servers, I would have been killed along with all the nice Cenarions.
My son got a call from his Guild to take his lvl 43 Warlock to Dolanaar to fend off a Horde Mega- raid that took them about an hour to quell. Fun for all and the kid gets 55 HK's to boot.
Yes, a 6 hour camp is excessive. I agree. Some people need to get a life if they think that is fun-for either side. Perhaps that is time for more intelligent sorts such as yourself to log in one of your alts and do some skill levelling. Eventually, the Goons will tire of their adolescent games and you can get on with cleaning your bags of the Green Hills pages.
However, back to task. One doesn't have to be lvl 60 to bang on the other guys. I am putting together a raid with my lvl 29 hunter's Guild to invade some Horde camp just for hoots.
What really bothers me is the players, either side, who kill just to kill. My Troll was about to turn in a quest to the Ratchet Dock Master when some Tauren Warrior killed him. Had to wait for a half hour for the respawn.
"There's the Beef!"