Lifecycle

We all do it, but not many of us like it because generally, it's not a pretty sight.
Ageing, that's what I'm talking about.  Supposedly someone has already been born who will live to 130 years old, and this morning I heard that someone thinks we can prolong life almost indefinitely.  How we do this is due to undiscovered technology that will develop over the new 10 or 20 years.  I'm not convinced on that theory although I remember that the project to put a man on the moon made the assumption that certain technology would be ready in time for the mission.
I can't help but think that our bodies have a finite lifespan.  The clue is in the word 'life' I suppose, and if we project that forward then a longer life = longer lifespan.
A bit difficult for a mere mortal (or am I) to get my head around.