As a roleplayer, I spend time and gold giving myself amazing outfits, creating a very vivid and colorful backstory, and spend hours creating content and scenes in which my characters can all unfold in their own way, and their own space. The story is not rushed, or forced, but simply evolves and takes shape as the interactions with others proceed. Much the same way I invite friends into my own home for dinner, movie days (like watching a trilogy), a birthday party, a wedding reception, or even just a cold beer near the firepit at midnight in the back yard, I feel as though my characters would have similar ambitions and goals with their friends on Azeroth.
With player housing, I could have an instanced phase where I can group up with friends, or like in swtor give them a key to my house to keep on their key ring, decorate the place with some interactive tables, chairs, couches, and floor cushions, and simply move my group roleplay into a more secluded setting away from other roleplayers, or griefers. If my adventurer just returned home from several weeks of travelling and fighting the good fight, she might enjoy preparing a feast for her guildmates and cohorts and celebrate in the comfort of her own living room, bar area, or even backyard. The farm at Halfhill in Pandaria proved that outdoor phasing is a thing, so if instead of a shack on stilts, they added a full sized house instead, we'd have precisely what we are looking for.
Limiting player options, and mocking others for wanting something individualized and unique is not very productive. I am not suggesting you have done either, but much like everything else in this world... it hurts no one to allow others to have something they enjoy the same way PvErs and PvPers have things they enjoy already. We just want to add a little more RP to this RPG
