Someone close to me has severe full-skeletal rheumatoid arthritis. She has had a metal plate inserted and then removed from her spine, both knees replaced, problems with her rotator cuff (that has progressed to a
frozen shoulder), and will likely need to have her ankle fused. She actively manages agonizing chronic pain 24/7.
She's still mobile, thank god, especially since the majority of these problems started in her 40s and she has been dealing with them for around 20 years.
The thought of her not being able to get a handicapped spot because someone was ignorant and lazy enough to unduly park their ass there disgusts me just a wee bit.
