Handicapped Bathroom Stall

Am I supposed to treat the bathroom stall like I treat the handicapped parking stall at, say a grocery store?   Am I ever allowed to use it?   I have and I always feel a little pang of guilt when I saddle up on the handicapped toilet.  [Sidenote: the handicapped toilet is a little higher than normal toilets.  What is that all about?]   Love the space, hate the guilt.  Look, I have not seen a handicapped person in my office complex in at least five years.  If I knew there was one on our floor, that stall is all his.  But when I am on DEFCOM 5 turd alert and that is the stall that is open, I am sprinting in.  Sprinting not to rub it in that I can but sprinting because I do not want to buy a new pair of slacks.   Does anyone know the protocol here?