It is the most spiritual, most emotion-filled thing in the world. There is nothing more relaxing and enlightening then listening/playing music, and the raw emotion it portrays is beautiful. It can portray the greatest of sadness and the most wonderful happiness at the same time, depending on who is listening to it. There is nothing in my life that makes me happier than playing my music and becoming one with the soul and emotion I am portraying, for I am the music, and it is me.
an example for you:
On mothers day, I went to my parents house to visit and hang out with my family (especially my mother). Well my father was cooking some food on the grill, and while we were waiting on that to cook, I was in his office with him and he pulled out his guitar and started playing a slow melodic riff. Well I pulled out my violin and started playing along with him, just random notes, whatever came to mind at the time, it didn't matter. I became one with the music and lost into it, giving time and my problems no meaning, for I was the music and it was me. He and I played like that for about 15 minutes i think (don't quote me on that one for I'm not even sure), and when I turned around my mother was standing there listening and I didn't even realize. She loved it too, and I can say that was one of the few times like that that I could say I was "truly" lost in the music, because nothing else mattered to me at the time.
That is the most wonderful thing about music to me, for it takes you to another world where only the soul of what is being played matters. The funniest thing about when I played with my father is that I suck at violin, I'm fairly new at the instrument, but it was a slow song and my ability didn't matter, that is what music is all about. I wish some would realize that, because many people are too focused on being good at their instrument, or making lots of money with it, and not focused on the music. If you lose that love of the music itself, what you play no longer carries any soul, the music is dead in you at that point. So I'm just going to worry about the music, for I never really want to use it to make money, because that is not the important thing about the music to me. I play because it brings me great happiness and serenity, and I love everything about it.