College isn't your only chance to learn a third language, though? It's weird, because your responses seem to indicate you think that after graduation, you've blown your chance at expanding your knowledge. You won't be. Smart people learn new things all their lives.

On a more practical level, you need to ask yourself whether or not it's worth another X number of years' tuition. I mean, is there NO OTHER WAY to learn, say, French without staying in school longer? Have you looked into community college courses, books, audio tapes, Rosetta stone, private tutor, whatever? Because just about any of those options will be cheaper than tuition.