Ah, Youth!

Younger people slake their thirst - 
No reason to endure it - 
With water or another drink
As quick as they procure it.

But older folk will agonize
Although they may secure it,
'Cause if they drink enough to quench,
Their bladders just can't store it.

Though young and old alike may share
A quenching-thirst ability,
It's only older ones who care
'Bout where's the next facility.