I know this is an exception rather than the rule but a very close friend of my brother studied History of Art as he was passionate on the subject. He published several graffiti magazines (all profitable) during his degree and as part of his studies published an art book - photography of derelict urban sites, old hospitals, prisons, mental asylums, train yards, factories, etc. That was also rather profitable.
A degree like that gives you time to pursue something outside of the degree, something related perhaps, or something completely seperate.
Doing something you are passionate about, especially if you have the means, is much more fulfilling than doing a degree that you hate just to get a job.
That said, I studied Mathematics, Operational Research, Statistics and Economics and now work as a Trader. I hated my degree (went from boring, to tedious, to purely abstract - Something I would enjoy as a hobby, but not on a schedule) but every bank wanted a degree to consider you for employement. I love my job, though lack of free time is a bit of a drain (and my bonsais have suffered, as has free time to dabble with computers) and am constantly challenged. My brothers friend is currently in washington working for Al Jazeera (he is a proper, proper Brit oddly enough) and loving it too. Different paths but both ending in careers that we are both happy with. Albeit by very different routes.