Until every single person in the universe is forced to spend a few days experiencing the world from a wheelchair, they will never get it.
I don't care if your granny's next door neighbour's brother-in-law is in a wheelchair; unless you (or someone you actually care for every day) are a wheelchair user, you haven't got a fucking clue.
I could sit and list the things that are more difficult, the things that are impossible, the fact you can't wear what you want, go where you want, the way that everything is designed and set up for the able bodied; but unless you experience, you will never actually understand.
This is not a club I chose to be in, or ever wanted to be in. However, now I am, I have to get on with my life and make the best of it. This is not easy when able-bodied people are telling me how I should think, feel, cope, go about my daily life. When shops pile shit on the floor so I can't get in and out. When travelling by "public" transport requires effort above and beyond what an able-bodied person would experience.
This world will never be equal or inclusive or even accessible, while we are treated as a different species, and whilst we need to bring court cases to enable us to travel on a fucking bus!