I would think that a true artist, who has, in their soul (or whatever one chooses to call a person's inner essence) the desire to create music and to share it with others, is not vain or simply thinking that their stuff is "good enough" for others, but it reflects a yearning to communicate with their fellow humans in the best -- and perhaps only -- way they know how. I, for one, am immensely grateful that there are (and always have been) composers (among other artists) who are compelled to share their gifts with us. We may not always like what they offer, but life would be pretty empty without the art they create. Mind you, not all people who create "art" are true artists, but I have utmost respect (and awe!) for those who are.