In the past it made sense because a level 20 running through level 40 mobs should proly get you dismounted. However, with the new scaling I dont see why this still exists. Nothing pisses me off than heading back to turn in some quests than getting dismounted by some random mob my own level that was over a hill. Or you decide to just keep running instead of fighting said mob and it dazes you another time or two. Like I said it made sense when mobs didnt scale to your level but now its just annoying and doesnt serve a purpose besides pissing you off.