As a person who suffered a severe back injury, going from standing to sitting, or sitting to standing (plus the act of sitting) or bending over (like to lift a toilet seat) causes a good deal of pain. Losing a stall that I can just stand at and take a leak would really suck. If there was one standing stall I couldn't care less, I don't care if it was enclosed or people could see me, wouldn't matter to me. That is my only thing against them.