I, like most, detest people who do not have handicapped tags or permits yet park in the Handicapped spots even if it's for a dash in the store and out.
One other thing that concerns me is when you have an open/available spot in the parking lot yet find that it's taken by a person with handicapped status. If they have the permits then they should first choose to park in the handicapped spaces leaving the general parking spaces for those that cannot use the handicapped spaces.
If there are no handicapped spaces available then I understand a handicapped person taking one of the general parking places but what I'm talking about is when I saw a handicapped person pass up four open handicapped spaces just to take the second, from front, parking place even though it wasn't designated handicapped.
It may be a small thing to complain about but if you are handicapped realize that others are not able to park in the designated spaces that are set aside for you so please, if you have the option available, choose to park in the handicapped places before taking the others.