i am not alone with this acrophobia syndrome, anytime i am far up i feel dizzy and if care is not taken i would definitely fall so i stay away from any climbing of some sort.... so teleporting is a great power to have and it may even help to over the fear of height
It is great to have teleportation power to tackle with the height phobia, but I still think it would somehow mess up the mind and who knows in a panic mode we could forgot how to use the ability, fall down and die. :v