It's not really about what you learnt, it's more about having the qualifications under your belt. If you want to open your own business straight away, then you don't need good grades or big qualifications, but you still need to be educated on how to run your business. But with that said, two of my uncles dropped out of high school and now they have their own businesses and are millionnaires.But if you want to have a job that pays you well, you're definitely gonna need some educational qualifications or a significant amount of work experience in the field in order for them to overlook your lack of education for the respective job.You're right though, if you don't have it, it's not the end of the world, but it DEFINITELY helps.