Yes life is valued and prolonged when it isn't just for the sake of prolonging it.
When things that you thought were never possible become reality you need to rethink or come up with a new set of rules.
as long as a person can live there is a purpose to his life and therefore it can not be cut short
the Torah dictates reality not the other way around and therefore in Judaism we believe that any change is possible at any moment despite all circumstances whether they are new or old.