Proverbs says that "The debtor is a slave to the lender."
I used to think that was colorful language to make a point, but as I've looked back on my life and reevaluated the system we live in, I actually read that quite literally. Debt causes us to spend a lot more time doing things when we'd much rather be doing something else. Interest is money thrown away for most of us. We'll never get it back. That money is invented. "Printed" out of nothing. We spend our lives trading hours of life that we'll never get back, just for a piece of paper or a direct deposit of that thing that they printed out of nothing. We go into debt and add interest payments so that we can have things now that we can't afford yet.
We chase more things we can't afford because there is an entire marketing industry that is actually psychological warfare against us. The sellers know they are selling us things we don't need. So, they hire people who are studied in the psychology of fear and our own feelings of inadequacy. If you don't look, smell, dress, or drive <these things>, then you won't measure up. Cover your inadequacies by buying this <thing> that you either don't need, or is more than you need.
How much better will most of us be if we slow down, figure out at any given time what's (A) an actual need that (B) I need NOW. Stop going into debt for things. Wait as often as possible until you've saved and can pay cash.
And to the younger folks. The quicker you wake up to this, the better off you'll be.
Go sit and talk to the 70 year old greeter ay WalMart, who can't afford to retire and can't afford to live on their social security. There's a good chance they didn't wake up until too late. Ask them how much money they think they spent in interest over their lifetime, and whether that amount would help them retire today. (Note, this is in no way meant as an insult to the poor. There are indeed poor people who have always been poor, never took out a loan, and are still poor. But in America, there are FAR more people who waste a lot of damn money on debt that they never really needed to have. And they will never get the time back because they're basically working their entire life for the bank, their masters.)