It makes me realize how full of good the world really is. The DH and I have had this discussion in the past, if you could balance the earth with good people on one side and bad people on the other which way will it tilt? If I've had a bad day at work I think it, every so slightly, leans to the good. Most the time I think it's more that slight, it's just that evil is more vociferous.
This is not to say that all artist are good people, but most of them if not good, with their art at least, give a feeling of goodness and happiness. Which hopefully helps the world become more so. I know it helps me feel it in this place filled with hatred and bitterness. Well that and my ipod :-D