One interesting perspective I've seen along these lines is that on a long enough time scale, disability is a problem for most people. That is, there are those

One interesting perspective I've seen along these lines is that on a long enough time scale, disability is a problem for most people. That is, there are those with a disability and everyone else is just "not disabled yet". The same sorts of utilitarian arguments that have us euthanising the disabled would also dictate that the world would be better off without the elderly, injured veterans and workers and everyone else subject to the whims of time and fortune. They're breathing valuable air that could go to the young and healthy.