There is not a single thing that is useless to the world, or fine to disappear. The beautiful things, the dirty things, the painful things, and the happy things.
That happiness, that sorrow, and everything else composes a form of music called "The world." Of course, YOU are one of the essential notes.

In this world, there is not only happiness. There is not only fun. For someone, darkness and poverty may best describe their world. - However, it is your life, you decide. The beautiful things, the dirty things, the painful things, and the happy things. It's up to you whether to accept them or not.