The thing is, there is no certainty in this life - in one second your entire world could shift. I'm not saying it will, but I am living proof that It can. We never prepare for tragedy and that's a good thing but my god what's it's taught me is how little we appreciate what we have or some cases once had.
Theres a remarkable amount of strength residing in those who move forward without being able to physically move. Ones that carry the weight of illness or a disability, they battle wars most know nothing about. They are the true warriors of the world, the ones who have every reason to quit but never do.