It's about the journey that music provides that is important.
I have many friends and family not into music that just do not "get it" when I hear a beautiful lyric or melody. I am moved and they are not. I suspect a lot of people in these forums have non-musical friends as well. You know they like whats hot or cool but can't understand why that obscure Willie Nelson track is on your playlist
My desire to understand how to speak the language of music is what drives me. To have a voice (musically) to express myself is one of the greatest things to happen to me in my life.
I may not be a great musician, and I'm definitely not a performer. But I am able to create something from nothing and it makes me feel good.
Creation is a soul fulfilling action. I have just had a journey that led me to create my work of art. Like my child, it has parts of me in it. Not DNA but soul.
Performance is an ego fulfilling action. Hey look at me and dig this! I like people to say "I really like that track!" sure it makes me feel good. But I do music for me first.
Maybe someday, my musical chops will be so highly developed that I will become dulled, uninspired and jealous of those who havent lost the spark yet. But until that day, I can't begrudge anyone for seeking out any outlet for expression.