Having an education is always better than not having an
education, whether you are self-employed or not.
If by having an education you mean "attend school" this is simply not true.
Scenario 1:Go to college fresh out of high school, get a four year degree. Be $20,000 in debt. Be unable to get the job you expected because you chose a school and degree that isn't in demand and have no experience. Try to get a lower paying job, but be unable to because you're "overqualified."
Scenario 2:Spend a couple months fresh out of high school getting a technical certification, get a job a few months after that. Spend the next three years working progressively demanding jobs. Be making 50k/yr, have no debt.
At the end of those four years, who's in the better position?
Scenario 3:Spend 8 years getting a highly specialized doctorate, such as medecine or law. Have $50,000 in debt. Get a job paying $100,000/yr. Realize six months later that you hate the industry you chose, but feel unable to leave because you've invested so many years of your life into it.
Senario 4:Throw caution to the wind fresh out of high school, get a low paying cruise ship job. Tour the world for six months. Decide you don't like that, so get a low paying job as a ski lift station attendant. Spend six months skiing every other day and partying with snow bunnies. Decide you don't like that. Take the couple thousand in cash you've saved, buy a plane ticket and a backpack and spend a year backpacking through europe. Return home, get a low paying retail job, realize that you can buy a boat for $1000 during off-season, become a liveaboard. Spend a year making minimum wage, but still have $700/mo completely disposable income because your expenses are so low. Blow most of it partying, having fun, enjoying life. Look back on your life and realize you've done all this in only three years, and still have five years to catch up with the guy in scenario 3, but more importantly, relaize that you don't really want to because life has more to offer than little green pieces of paper.
Which of those people would you rather be?
education is always better
Knowledge has value. Formal education is not precisely the same thing as knowledge.
Yes, sometimes formal education is useful. In some cases it may even be a practical necessity. And sometimes it isn't. For some people, the time and money required to get a formal education may be better spent elsewhere. Yes, we can create scenarios in which the person who goes to school is in the better position. But it is a mistake, I think, to assume that this will always be so.