Hmmmm, you sure seem to have it in for art history...
I got a degree in business administration and entrepreneurship. It did fuck all in terms of my later career. How do you know which degree is better than another?
My father got a Master's in English Literature (his Master's thesis was on Chaucer) and yet later he was an integral part of perhaps the greatest swords to plowshares treaty in human history; turning thousands of former Soviet nuclear warheads into fuel for nuclear reactors to make electricity here in America. Are you going to say his degree was a waste just because there were no wrenches involved?
I say let's control the cost of getting the degrees in the first place, rather than deciding who can get which one.