handicapped parking

One of my pet peeves is the abuse of "handicapped parking". It galls me when I see someone using the space and they obviously are not handicapped in any way unless you count "mentally handicapped". But the worst of the abusers are the people who some how get the "handicapped" card or sticker and in no way need it. They use their "parent's" card or car and take advantage of the system. I have often thought of various ways to "teach a lesson" but since I am not a "handicapped parking" officer it is not my place to issue punishment. I just boil over silently when I see it happen. One time a friend of mine screamed at an abuser, "how do you qualify as handicapped, no brains?" The person just walked on without looking or responding. I wanted to flatten her tire but I didn't. Just recently I came across an interesting situation. What qualifies a person to be handicapped enough to get the parking pass? You would think that a heart transplant patient might qualify and to be sure, he or she does. However, if that person has recovered from the operation, does he or she still qualify? I have a friend that had a heart transplant. He has recovered nicely and in fact plays golf. We both played in a tournament in Palm Springs last summer and shared the same room. It was an interesting weekend. He had a ton of pills he had to take. He was well organized and took them exactly the same time each day. All of this information is really secondary and is just to show that he is handicapped but yet he can play golf. He does have the "handicapped parking" pass and used it where ever he went. I became confused. Who could deny a heart transplant patient "handicapped parking"? Why does anyone who can play 36 holes of golf in 3 days deserve a "handicapped parking" pass? You tell me. What do you think?