It's not what you make (earn.)...
It's what you save.
I've seen folks who have decent income, but not very much to show for it. A mortgage, (used) car payments, credit card bills, and little or no security (savings). They have lived their whole lives from paycheck to paycheck.
My thoughts are that it is not about what you make particularly, but instead what you save along with how you 'spend'.
I do know there are folks who IMHO are so strapped that just making it from week to week might be the only option.
I haven't always saved on a regular basis, but have always been frugal, lived well within my means, never carried credit card debt, and savings sometimes just happened...checking account keeps growing until I either move the excess or spend it and pay cash for a major purchase...new (to me) vehicle, driveway paved, etc...other big wants/needs.
When I was working, 401K and the company stock option purchase was a 'regular' savings.
And btw...where's joyfulguy been lately? Have not seen him lately at the KT.