Years ago after being off long term sick, I returned to work on a phased return basis.
I parked in a disabled bay at the Education dept. Offices, got out of the car and went to get my Blue Badge from my bag in the boot.
A car drew up, a woman got out and told me I wasn't disabled and couldn't park there. She was shouting and ranting at me. I told her I had a badge, she stormed off, still ranting and went into the Offices, demanding to know who I was, still insisting I wasn't disabled.
That woman was THE DIRECTOR OF EDUCATION.
The problem is I look so well and don't look disabled, despite having had a Blue Badge for twenty years, due to multiple comorbidities. That badge enabled me to keep working, because I could get to work and various meeting, on the occasions when I could hardly walk and/or breathe. The L.A actually painted an extra disabled bay in our tiny school car park, otherwise I would have probably expired trying to climb the steep hill to the school.
You never know what a person's conditions are.
Where I live, the disabled bays are always full of non badge users, they don't care.