There are two separate issues in this thread, that have become merged in this thread but need not be.
One is the sad new practice of hiring more adjuncts vs. tenure track professors.
The other seems to be a question of whether learning the humanities is valuable at all! I disagree adamantly that the goal of college should be specific vocational training. I think that a liberal arts education develops skills of reasoning, critical thinking, and writing that are applicable to ANY field. Philosophy, history, anthropology, etc. majors go on to lucrative careers in law, medicine, investment banking, consulting, finance, management, etc.-- not just to professorships (although I hope there will always be great new professors). I certainly saw that at Williams, where I went to college; people’s majors often provided very little clue as to what their eventual careers ended up being.
We can’t even know what the jobs of the future will be! The world changes, but the need to be able to think does not. Hence, learning to think is more transferable than learning a trade.
I may add that, as someone who does a lot of hiring in the field of public elementary education, I sometimes find the most interesting candidates to be people who pursued an unrelated major as an undergraduate (history, psychology, English, etc.) and picked up their educational credentials later.
College can be four magical years to live in a ivory tower, immersed in the life of the mind, with professors and peers who share your love of ideas.
That’s what I want for my son, now a high school junior. There are plenty of careers out there, and he will figure out what he wants to do. But, right now, I want to give him the gift of going to college and learning to think deeply… of staying up late with friends debating theories… of surrounding himself for four years with those who love learning, and thinking, as much as he does. I believe that this background will help make him a wise and happy human being who someday will be able to contribute wonderfully to a career, a field of knowledge, a family, and society.