My mother and I both have one for our cars because we often drive my ailing grandmother around. My friends always try to get me to use the tag whenever parking's scarce, but I don't know, I get really guilty because I'm one of those who get pissed off at people who wrongfully use handicapped parking privileges.

I had a friend in college that I used to carpool with. His family operated a care home and so he had the "special" handicapped tags & placards. He'd take advantage of the choice parking and he'd FAKE his limp after he got out of the car and resumed walking normally when he was out of sight from the lot. He'd drive me nuts.