Imagine that each day, at 00h your bank account would fill with 86,400 dollars, but at the end of that day, whatever you didn't use would disapear,
never accumulating, never returning.
Wouldn't you make sure that money didn't go to waste?
Each of your days has 86,400 seconds.
Why then, do you spend your money wisely, but waste your time?
You can make more money, but not more time.