A balanced Map System to make sure that each type of map (low,mid,high,very high) have all styles (gens,non-pvp,normal).
6 NON-PVP maps: Kalima1, Kalima2, Aida, Crywolf, Karutan2 and Kalima7 where you can only KS.
NON-PVP maps have 100% exp and 25% drop.
5 GENS maps: Atlans, Tarkan, Karutan1, Relics and Vulcanus.
Gens Maps have +10% exp compared to non-gens maps.
All other maps are 100% PVP, with free KS (no ban), free PK (no ban).
As you can see in the gameplay info tab that of the server you have been playing. KS is a part of the game, the same way PK is. If you can't handle it, there are plenty of single player games where you could prove yourself without others interfering with your game experience.
Also you could stop whining for a moment and spamming post
