Some people love to pvp, that is all they want to do. Such players do not want to often or at all go out and do dailies and/or que for random scenario/dungeon. They spend their time in rated or random bgs or doing arena, sometimes doing world pvp. This leads less gold for time spent playing. Playing here means working on Rep, valor, doing raids, scenarios or dungeons and ofcourse pvp.
Should it be, when you kill a player in the world or in a bg, that they can be looted for gold like a mob (not that dead players gold mind) and i mean significant not in silvers. Should completing a rated or random bg or doing arena games award any gold? If not why not if yes why is this your opinion.
Pvpers can work the auction house and spend time on professions do they need more gold from doing what they enjoy most. PVP.