I think people let the lore of the game effect how they actually feel, warlocks and hunters have always rivaled eachother. Warlocks being stuck up and feel above everyone else, hunters love a challange and wont back down from one, causing the warlocks to hate them for rivaling their skill, and hunters hate them for hating us.... On another note if you ignore the lore then most people hate hunters in pvp.... My warlock friend constantly rages in crucible with the remark,"UGH I HATE HUNTERS!... except you sklez your cool".