Very interesting question, which, because we are set on the same, aging course, demands some reflection.
Of course, here we can recall our Tennyson, "Come my friends..." (though this "heroic heart" met his shipwreck in Dante's portrait).
But the notion of purpose (telos), of there being "any point" is key. The point(s) can be framed personally (subjective) and socially (collective). Subjective purposes are fluid and changing (final purposes, at least in the Aristotelian sense, are altogether different). Still, the self at time t and the self at time t+(x) are two different selves but, assuming they have in common the mental competency to set their own ends, as Griffith writes, one's raison d'etre can change. Collectively, experienced and wise persons contribute to different "points."
Sure, behind the white towel of decrepitude hangs nothing but a shrunken sack of suck; but whoever said that life promises you a schmoe's garden?
