Sometimes it's extremely needed to drop instantly any current action with all the progress done.
For example: I was started to drink, and this moment Zed is aggroed me from anywhere. I was attacked several times when I still continue drinking and chopped off then.
It'll be great to have ability to drop current action without any result of an action - used tin stay on the ground and player stay thirsty).
Sure that this feature may save the player nerves when the see the are attacked but cannot even stop doing smth.