You're required to have some interaction with the world, even though levelling is over, because you're playing an MMO and it's good for the game. You may not realise this and want to kick and scream (or whine stupidly on the forums), but luckily Blizzard (and many players) know whats best for you - even if you don't realise it yourself - so you'll continue to do this for the foreseeable future.
I love hopping off the flight path and *gasp* actually seeing people on their ground mounts as we all make our way to/from WQ. Its much better than *alt-tab and fly from A directly to B and descend to ground - invalidating everything in between*, and seeing nobody along the way until you magically pop out of the air directly on top of your target, then magically ascend into the sky again and dissappear. Thats why flying dissolves all the potential interaction people have with the world in between liftoff and destination - aka the fly over the sandbox analogy.