I am currently in my last year of a business degree, so I think I might be able to give some insight on my experience.
Before enrolling, I used to be an Automotive Technician making 49k per year and wanting something more out of life, so I enrolled in an Undergrad as a business technology major. I can tell you that I feel slightly disappointed in my University experience, although I gained knowledge on a couple valuable topics, most of my course have left me feeling like I'm wasting my time.
But I do not regret going to business school. I've been able to do a couple paid internships that paid me twice as much for work that is a lot more enjoyable. During one of my internships, I have joined a startup to analyze and improve their business' processes. I was surprised how they were able to stay afloat with the way they ran their business. It was an extremely rewarding experience and I felt valued in a workplace for the first time. I have also met many great people that I'm proud to call friends.
Undergrad is definitely not for everyone, Its not easy, there was nights where I felt like rolling myself into a ball and crying myself to sleep. So you have to ask yourself what is your end goal. Getting an MBA to end up as a nail tech is most likely not worth the hassle and money. You might do a degree and discover that you enjoy that far more then doing nails, just like I never considered a masters degree until this year.