I don't care about the placard so much, if the person seems to use it. Like if 85 yo granny is slooooowwww moving and parks there, but doesn't want the handicapped thing in her car (dignity), that's okay with me. But parking in that spot without official permission means you better be pretty obvious in your need to park there.If you have the handicap sticker, I will keep my yap shut no matter how spry you are.(like the dude at home depot on sat. He actually was walking faster than me).
But if you dont have the handicap card, dont even try to park there no matter how much you need it. I will call the cops.
I saw a guy park there once with no stickers, in his fancy convertible... and by the way he got out, it reminded me of how men I've known have walked the day after getting a vasectomy. I cut him some slack.
I had surgery on both feet one December, had to park in handicapped spots to do my christmas shopping (STUPID, I was in such pain! where was the internet back then?!). I'm glad they were there for me.