Is it a good thing? Should we condone this practice of learning things just to learn them, not to be used for practical application?
I have long been against such behaviors, for the longest time simply because I don't like them myself. However, since I've been at college I've realized that it has more to do with my fundamental beliefs than my disposition of disliking the work. God wants us to live purposefully... and to spend money, time, and effort mastering things that won't contribute to any greater purpose I believe is more than just impractical, it's unwise.
That was my mini-rant for the day. And it was brought to you by my Contemporary Math homework that I don't want to do.