Higher education has a lot of debate. Looking in pure financial terms, spending 4 years at a private university for a degree in philosophy is a losing proposition.
To the point: It's often said that the only worthwhile degrees are in the hard sciences.
I'd disagree. I would however say that, short of becoming a teacher, those degrees are likely the ones that will find you a job directly related to your degree after graduation. There are others (hospitality, hotel and restaurant management, library "science", etc.) that will also do the same.
It seems that this is usually said by people with such degrees, but there's apparently a general consensus that majoring in English, philosophy, linguistics etc will not likely gain you more than ridiculous levels of debt, and at best a career in teaching. As a person with almost no interest in the sciences, only really being inclined towards literature, I find this rather depressing.
A better question is: what would you do for work with those degrees? The answer: not too damn much! The result is that, in a major like the ones you mentioned, your degree is only worth the understanding the effort you put into the program. I'd suggest graduating cum laude or above. A bachelor's degree is nothing to scoff at, especially in a difficult job market. It will usually give you footing of at least a few years' experience.
Plus, personal opinion, you make better conversation in social situations than a rocket scientist... although I went to a rocket science's wedding two weeks ago, and he was pretty interesting. Hmmmph.
There are those who say that what's important, more so than your education, is to be industrious, dedicated and all that. This doesn't seem any more pleasant than the former.
That's hard to measure. The most important thing during college, outside of getting your degree, is making connections. If you're not getting into internships after your second year during vacations, you're probably not living up to your potential. Meet people and professors and network.
If it matters at all, I got my degree in business management and now do accounting and write about video games. So, hey, who knows what you'll end up doing?