What to do when you see a person having an epileptic seizure in a bath tub? Just add your dirty laundry.
Did you mean to say that people with physical illness/disorder  is useless or dirty? I have nothing positive to remark back at you there.
Yes, both. They are not useful to society.
It is a shame you believe disabled people are useless. One day you might succumb to the same fate, have a heart and not be so unfeeling for them.