That's my beef. It's not that the spots exist, but they exist in quantities that FAR outnumber the proportion of handicapped drivers that exist. It probably varies from state to state. Ohio was really bad with them, Tennessee not quite as bad. Countless times, I've seen 3 or 4 cars with the handicapped stickers parked in the spots while the other 20 or 30 spots sat empty.
Then we get Florida where it seems that 50% of the drivers have the blue handicapped placard hanging from their mirror.
I don't have a handicap sticker, but could if I wanted one. My good days far exceed my bad days and as long as that remains so, I won't get one. There are days when not having to walk an extra thirty feet each way would be a very good thing, and walking past a large number of largely vacant handicap spots irritates me no end.