I think an undergraduate degree is vastly different than someone doing graduate work. (NB: I have an undergraduate degree in philosophy earned over 25 years ago.) I guess it also depends on the school -- if you have a degree from a program that is highly specialized, then, yeah, probably not worth it. But, if the program provides a good overview drawing from multiple sources, with a bit of specialization later in the degree, it may not be so utterly ridiculous.