One of the best feelings in the world is going to bed at night with cash in money-generating investments.
The world is different when you have no debts.
No debts = no worries.
The feeling compounds when your money is put to work.
Tension melts away.
Cash sitting in checking accounts is just money awaiting orders. Cash turned into depreciating assets (cars) is an army that is experiencing attrition.
Eventually, you will be left with no soldiers (think EU4).