Why does everything need a monetary value? If someone wants to be an artist, that doesn't necessarily come from a world of wanting to make money from their art.

And who defines whether or not an education is valuable? Teachers don't have very good job prospects (low pay means they're less valuable), do you think it would be a really good idea to restrict who can become a teacher to only the reasonably well off?

Teachers should not be paying full price at Harvard (I don't know if Havard even offers a teaching degree), there is value in a teaching degree but only enough for the much cheaper state schools.

I have no problem with people wanting to be artists. The world needs art. However I have a problem with someone spending more than they can afford on anything. Want an art degree, first get a job and save up as art will never pay the bills (there are exceptions that prove this rule). Once you can afford to live (that is eat and a tiny home: the minimums) go ahead and get whatever luxury you can afford. Some get an art degree, some a nice car, some collect stamps, you can have a family. I don't care much what you choose so long as you are not beyond your means.

To put it a different way, if you are making an investment then it needs to be a good investment with a return on investment. If you are not making an investment that is fine but then you need to be careful not to destroy your future on bad choices.