Well, this is good for the market but bad for the economy, because that debt will catch up to them. If you find yourself in this pattern, consider playing around with an investment calculator and see if compound growth can't take the place of the joy of spending money.

As a rough rule of thumb, invested money doubles in purchasing power every 10 years. Another interesting rule of thumb is that if you save $X every year, after 15 years, you can stop and spend $X every year for the rest of your life. So what's better, spending that money now, or growing that money so you don't need to work to spend it ever again? If you save enough, you can even retire early so you can enjoy your money longer.