Life extension is only rational in a very limited sense.
In the greater scope of the universe, all things must die. The rational outlook is to see our position in this context. Our mortality establishes the constraints in which we look for meaning and purpose, so that we may not be wearied by an incalculable infinite.
And then we may understand it is what we do and express about ourselves that imbues life with meaning, and not in the hope a monument may immortalize an empty phrase. For in all finite existence, the most we can say, and what we must say, is "we are here".
In the greater scope of the universe, all things must die. The rational outlook is to see our position in this context. Our mortality establishes the constraints in which we look for meaning and purpose, so that we may not be wearied by an incalculable infinite.
And then we may understand it is what we do and express about ourselves that imbues life with meaning, and not in the hope a monument may immortalize an empty phrase. For in all finite existence, the most we can say, and what we must say, is "we are here".