Music gives us a way to practice developing emotionally. Maybe that's why some people don't like music - they're afraid to express their emotions, afraid they'll lose control of themselves, break down and cry, or get too charged up and not know what to do with the energy. Because emotions are unfathomable. That's what makes emotions so interesting. That's what drives composers to try and recreate emotions, digging into them for new insights.
Emotions are like the gold embedded in mountains.
No matter how much you dig out, there's always more, somewhere. And, of course, there's fool's gold and real gold, like with emotions. To be able to tell the difference between superficial music that may excite your taste like sugar, and great music that nourishes you forever, requires a lot of digging. Musical creativity, like any creativity, starts with copying and imitating. You don't just pop out of the womb writing music.