Ah, but which are those, and do we really want to get rid of them all? Math degrees, for example, are not too lucrative employment-wise (except for statistics, which often is in a different department anyway). Do we really want to axe the math department?
Biology is even worse--- its starting salaries are approximately the same as most liberal arts fields. Does biology get to stay because it's science, though, despite having no better a business case than English does?
Provided you can afford the impractical degree or you don't mind the debt to get it, then no, they're not. The problem is that people are investing tens of thousands of dollars into degrees that won't return anything on that investment. I've heard the argument that such an investment is not in money but in making one a more well-rounded person, but I've personally never understood paying so much for knowledge that can be gotten for free with the internet and a library card.
I'm well-rounded. I can also program, do math (it's not just for high school math teachers) and speak German.
Meanwhile, my friend the psych/sociology major is out of work despite intelligence and conversational aptitude, and my friend the anthropology major works at a laundromat for what would be less than minimum wage in most other states.
These are people just as smart as I am, with much better GPAs. We all bought the "college => easy middle class" thing hook, line and sinker; I'm just lucky enough to have chosen a degree that pays.
This is anecdotal, but I know of many people who got jobs from big firms during University's career fair. They were doing things like History, or English language.
The reason why the employers were so keen on them was not that they were going to use the subject itself (e.g. History) but the techniques. A history graduate can read _a_lot_ quickly, summarise it, and hand you a report. Those are great skills that are often required in a job (in some jobs more than others).
So impractical degrees may still be... practical. :)
(that said I personally don't think a degree should be judge on how practical it is. But I agree with the poster above that if you do want to focus on things that give you better job prospects in the short run, then there are colleges (in the Canadian/UK sense of shorter, more focused higher eduction courses).
