Not only that, but even though you might not become a world-famous pianist, trying to learn the instrument might lead you to different places, such as building

Not only that, but even though you might not become a world-famous pianist, trying to learn the instrument might lead you to different places, such as building or tuning pianos, for example. In other words, there are so many more tasks and abilities in the world than just those we hear about, and paths expand into a lot more skills than you could possibly consider to exist. Everyone could be a specialist in a very niche area (or many), but they need to know those exist in the first place. So, try things. As many as you can, because you'll never know where that will lead you.