You can, unless your teeth or something else becomes a health problem you can't fix.
That really is the most important thing stopping me even if there's but a small chance this will happen.
It's a game of luck, you could live to 90 if you go to a fertile area without extreme conditions.
I'm sure there's plenty of those people out there.
You obviously won't hear them or of them.
And you can get a disease while in society and still die because there is no cure.