The use of derogatory names just puts people on the defensive and no one gets any useful point across. Even the developer in the Q/A used "carebear" ver. PVP to describe the sides here, when it is clearly non-pvp ver. pvp.
As soon as Greefer is used for PVP, or carebear for non-pvp, the conversation is over. But people don’t see this issue, and continue to go round and round :P