Rock on, we need more philosophers like you.
I mean, we already have subsidies for people who are actually good at the humanities--tenured professorships. Philosophy's probably worthwhile that society can afford to pay for philosophers--and at this rate, we're hiring more philosophers as a society than ever in history. But what's the gain for society in training far more philosophers than we can afford to employ, or in indulging the 80%+ of philosophy undergraduates who have little to no aptitude for the subject?
I won't even get into the bigger question, which is whether religious studies or women's studies are worthwhile for society to subsidize at all.
Sure, there is a minimum cost to a degree that may or may not line up with its earning potential... but $100K? How in the world do schools get away with charging that much for a degree whose earning potential is so low?
This whole problem would be a lot less of an issue if degrees cost proportionally (or at least roughly proportionally) to their market value. People who want to study "useless" degrees can do so, and their costs would be likewise much lower than people who want "useful" degrees for employment. Perhaps we'd all be better off as a society this way.