I've generally avoided these discussions. I don't think of myself as either of these things, really (RP or PL). I do both to some extent, but if I had to pin it down I'd have to admit that I'm more PL than RP. I'm trying now to figure out why that is. If I can do that, maybe I can offer some useful feedback to make it easier for others.
You see, it's not that I'm not interested in RP. Far from it. In real life I'm heavily involved in theatre and many other arts. But I've felt disconnected from RP in this game, and I'm trying to figure out why. It's partly that I'm most comfortable shaping a character out of circumstance. Circumstance in this case has included lots of bugs that meant I couldn't be in populated areas much, and also the need to do lots of quests and grinding to become a mage. I feel too that settings are not fully developed or revealed yet, particularly where magic is concerned. The fact that magic doesn't do much now also makes developing a mage character difficult. All this has led to a loner/explorer character who doesn't converse much and avoids other people. So in a weird way not _RP_ing is RPing if you see what I mean.
Thinking about it now, I think part of it is that most of us as players know almost exactly the same things about the world as all the others . Perhaps I just want the settings to be a lot deeper, and the world a lot bigger. That will come with time...
There's more, I know, that is keeping me from getting more into RP. I just can't put my finger on what it is.