Even Greener Pastures

For one thing - and yes, I know how grandmotherly, even trite this is going to sound - I don't believe there is such a thing as learning something "useless", except perhaps for playing air guitar.

For another, I'm somewhat envious of your choice, Jerry. How nice for you to surprise and delight people by learning their language! What a contrast to being viewed rather warily by the majority of native speakers, because, you know, theirs being such an intricate and basically un-learnable language, and of course, at the same time such a priceless national treasure, you're sure to terminally disfigure this precious heirloom by your clumsy and inaccurate attempts at speaking it. (Yes, I did have one particular language in mind while I was writing this short rant, but actually, it applies to several languages.)