Heck, I've been doing hard-core OS/embedded/real-time/driver/assembly stuff for almost two decades and I still haven't even found a use for: calculus (3 classes), physics (2 classes), statistics, databases (2 classes), theory of computation, or GUI development. If I can't find a use for those, what chance is there that I'll ever use the "history of western music" and similar? No boss will ever seriously ask for Marxist criticism.
I have my degree though. That is reason enough.