Yep, and I'm thankful for them when I need them. I do wish they were a little more game specific for the terrain. The arrows point "as the crow flies" and disregard obstacles - but they are still very helpful. And I usually have them off, so I'm glad I can do that.
So what is the difference between, I only have them on when I don't know which way to go (which is rare) and No, I usually have them off (except for the above)
I selected No since I almost always have them off and usually know which way to go, but will once in a rare while flip them on to see which way to go and then almost immediately turn them off again (or more often turn them off after they get turned on accidentally).
I use them in places when I don't have my quest arrow and it's a maze, like in the dark cave that connects cyclops lane to firecat alley, or when I'm in dragonspyre and my quest arrow is stuck (my computer is slowish)