Oh, so its serious discussion you wanted? Hard to tell from the tone of this thread. Sure, I can go the distance with you.
My father was disabled, using a wheelchair during a time when it was very difficult to find handicapped accessible parking spaces. Not all businesses had them, or not enough of them, or the public just generally disregarded the signs. Social awareness was very low, and it was just as frustrating to us to have to park so far away from entrances, because that was where we had to find enough space to get him out of the vehicle and into his chair.
Now my daughter is disabled. While she doesn't use a chair, she labors walking short distances (of course, some people on here believe its good for her to expend the energy. Let them massage her aching back and hips at the end of a long day of expending energy just getting thru a normal day, and then preach to me about what good this is doing her. Let them listen to her cry out in her sleep from muscle spasms and leg cramps). We don't have a placard for her, as she doesn't want one, and we believe that's her choice and her right. But there were times when I would have wanted one, like when she was using a chair after major surgery on her leg. Or when my arms were full of packages, and I had to figure out how to carry them, assist her, and get into my vehicle without getting mugged.
But many citizens like her decide that they'd like to have the right to cut their walk so they can deal with just a little less pain and discomfort at the end of the day. Or carry packages a shorter distance. What does it cost you to leave that parking space available for them, except to walk a little extra distance? What's wrong with YOU expending a little extra energy? That's just basic human decency and compassion.
I have read several good arguments in this thread as to why changing the currency would be a bad idea, and they are good and valid points, and I'm prepared to re-think my opinion on adaptive currency. But you didn't mention policy or cost. You mentioned what it costs YOU on a PERSONAL LEVEL to have to pass up an empty HA parking space and park farther away. And I'm telling you that personally, compassion costs you nothing.
Conservatives, and most FReepers, believe strongly that compassion should be a personal choice and not legislated by the government. I agree. But the parking spaces are there, and its against the law for you to park there with a card or plate, and this policy will not go away. So be thankful that you CAN make the walk and expend the energy that people like my daughter cannot. My guess is that you're like most people, and you circle the lot looking for spaces that are just as close as the HA ones.
Best wishes.