My character doesn't really get in a whole lot of fights, but in the event that I do, I'd rather rp it because it gives a little more control over things happening they way they more likely would happen based on the characters involved specifically. The downside, obviously, is that most people would have themselves come out victorious and you end up with a lot of "-dodges-"
If I get attacked in wilderness though I'm pretty much always gonna respond with pvp.