I use it every day
First to be able to recognize what is or is not a real attack/threat worth responding to. And to be able to remain calm and able to think when response is required rather then just reacting blindly.
Sometimes I just get out of the way and let them continue on their way, remove the target.
Sometimes I deliver a sharp verbal atemi
Sometimes I just ask them questions causing them to stumble and let them loose balance.
I have had a couple of opportunities to use aspects of physical aikido as well joint locks and unbalancing work rather well on uncooperative horses if you know how their bodies work.