This is one of the great mistakes of our time: that knowledge is the goal. If that's the goal, anything other than fact and logic-based areas are not worthwhile. But this is simply an unfortunate side-effect of the industrial revolution.

Understanding is the goal, and knowledge is necessary but not sufficient for understanding. (In fact, knowledge which doesn't promote understanding is trivia, though you probably won't know which that is until the end of your life.)

Fiction literature is absolutely one of the best sources of understanding. Be careful that you're not fishing in the river when you live near the sea.