i personally have repaid back more than 30k and after more than a decade since graduation, ive yet to ever land a job, get more money or utilize my degree in any way.
in my experience, its what you know not where you went to learn it. salaries are based upon performance, seniority and relationships. everyone has the same chance of success through hard work and never giving up. the never giving up part is the hardest. a college degree may help for some, but its not a hinderance for someone with a half a brain and a good deal of common sense.
out of loan debt made way for new debt. the best thing a higher education gave me was to believe in myself able to achieve my goals. thats what i paid them back for, and with a matter of perspective - it was worth it for just that.