One could argue that science progresses life, and advances culture. Am I really better off in a cosmic sense because of my GPS? Is my life any richer or more full of meaning because we've cured polio? Science has certainly progressed humanity, but a lot of times science and technology seem to complicate life more than simplify it.
One could argue that art is the means of true expression. Does my life have more meaning after hearing Eleanor Rigby belted out of a quality sound system? Do I understand the world a little better after seeing the ceiling of the Sistine Chapel? Art seems to have a sort of spiritual cleansing affect when you take it in. Art has the problem of affecting as many people as science.
If you look at past civilizations uncovered by archaeologists almost all the really exciting discoveries were art. Art seems to hold up better over time than science.