I think the main issue is that the people who can afford them as they are, upkeep and all, usually aren’t the same people who need them. After all, when’s the last time you saw a fairly well-off person missing a hand?

The American health care extortion racket doesn’t help matters either. Getting the “insurance” companies to pay out for anything is like pulling teeth, and America is, by far, the most widely publicised demographic; so when people there aren’t getting these things when they need them, they lose most of their potential funding because very few people actually know enough about them to care.