I think some of the best things learned in college are not the actual major subject matter. Instead, I learned time management, financial management, how to pick good friends, how to deal with difficult or unfair people (professors, students, administrators, business people), how to "pick up the pieces" when you make a mess of something, how to get over being hurt or stabbed in the back, how to live with someone with a different style of living, how to forgive, and especially - how to work through and finish something well that seems to have no real value (certain classes).
My degree was to teach high school math. I taught full-time for 5 years, quit to have my babies (and used my college smarts to be the best mommy!), subbed here and there while they were in school, and taught part-time when they were in college. The bulk of high school kids have changed (the use of their time - not homework, their need for excitement and fun in class, their disdain for the teaching profession, the growing amount of emotional pain due to poor parental choices, etc.) and too many of the parents have changed (some believe everything their kids say, some expect miracles under challenging circumstances, some have stopped parenting their teens, and some have a very low opinion of the profession because of past experiences). I have no desire to go back into the classroom. A group of kids and parents who are disrespectful and/or broken, on a regular basis is not worth it. The classes are way too large to teach a subject where each kid comes in at a different level with different learning styles and a different math background.
Now I tutor and it is wonderful. I also have a home-based business that uses my college smarts.