My major is irrelevant to this conversation because I have classmates with successful and fulfilling careers in all the disciplines offered by my business school. Their business degrees (and mine) are their primary degree and are worth more than they cost.

I think you do a disservice to young people by giving them absolute advice like that. Business school does not work for everyone, that does not make it worthless or only good as a supplement.

My degree opened doors to a career that I would not have with any other degree. That doesn't mean everyone should do it but a lot of people can. It certainly means that your absolute statements are incorrect.