Well, yeah, that’s a factor, but seriously, after 20 years of marriage to someone disabled I’ve met all too many people who just can NOT wrap their heads around the concept that a cripple could have an interesting, exciting, meaningful life. We have encountered people who are obsessed with curing him - prayer, diet, crystals, all sorts of woo-woo - and just don’t get it that we’re happy. His physical limitations are an annoyance more than a tragedy at this point. WE aren’t obsessing over it, neither should they.
Would we like it even better if he was physically normal? Sure. But we also know that it’s medical science that would do that, if anything, and right now the science can’t do it. When there is a “cure” fine, call us, and assuming it’s affordable and doesn’t have some other bizarro whacky side effect(s) (in other words, the risk/benefit ratio is favorable) sure, I think he’ll go for it. Meanwhile, we aren’t putting our lives on hold waiting for it. As Jamie says up thread, there’s a life to live and you don’t get do-overs on life.
Or another way to put it, we focus on can, not can’t.