No, a lot of those underlying conditions will be triggered by something or other within a few years.
I am going to tell you a secret:
Nobody lives forever and the human body reaches a point where death is coming sooner rather than later. It isn’t always fair and some people are quite young when they get to that point.
I don’t know what your point is. You seem to be saying that it’s pointless to save any lives because everyone will die sooner or later. Are you a nihlist?