i have some discontent about the narrative "we will all end up disabled" "it is likely that you will be disabled before you die" and "you are only one accident away from disability" to convince people to care about us disabled people.
human health is fragile and it is very possible to become disabled, even severely disabled, when previously abled. but the sort of care and activism that will arise from "it could happen to you too" won't be helpful to disabled people. it isn't, for example, helpful to disabled people who were born disabled, and have been told many times by eugenicists that they should not have been allowed to exist. it also undermines the experience of disabled people who in their childhood, teens, twenties, thirties, are living a completely different lifestyle compared to their abled peers. people who only care about eventual poor health will not care about these young disabled people. will not care about the rights and autonomy of disabled children, will not care about accessibility in schools or playgrounds etc.
abled people also have the illusion that even if it could happen to them, it won't. most people do not think they will become permanently disabled. telling them they might will not change this assumption, because there are many many misconceptions and untruths about disability. on some level many people may still believe that disability will be a consequence of doing something wrongly.
finally people should care about us even if they will never ever experience ableism, disability, or poor health in their lifetime. this is true for many groups. my white friends care if i experience racism even if they don't. abled who never will experience ableism shouldn't need to be reminded, persuaded, coerced into caring about disabled people