The system needs a rethink. In my opinion I'd say a blue badge should only be given to people who have trouble walking. It seems that any illness can be considered a disability and be given the badge.
I'd agree with this. I know the typical argument is that not all disabilities are visible, but tbh it should only be mobility disabilities that are eligible.
If you have the ability to walk 100 meters round a shop then you clearly don't need to be parked just outside the door.