I hate the idea that education somehow has to be justified by its potential earning power or value for money.
I think the blame for this lies firmly at Tony Blair's door when, back in '98, he set a target for 50% of school leavers (post A-level) to go to university, and at the same time abolished grants in favour of students paying fees.
Once payment for anything gets involved, perceived value for money comes into play.
Anyone who did an arts degree, as did I, would find it very hard to justify their course on the basis of potential earning or value for money, beyond personal enrichment. My 2:1 in Linguistics & Literature didn't get me my first job in advertising; my post-grad secretarial qualifications did.
I've been learning Mandarin (very slowly!) for over 15 years now, which I started when I was in my 50s. I'm always asked why I'm doing it - and many people are perplexed when I say it's for no reason other than my own interest/broadening of my mind. Learning for its own sake doesn't appear to be valued any more.