Zappa, in answer to being asked why he stopped writing 'classical' type pieces:

'The single most useless thing an American can do is write music. Unless you're writing a song to be a hit record or writing a jingle for a product, there's no reason for anybody in America to write music. It's useless. It's literally without function in this society. People should just stop doing it -- and stop teaching it.'

A little fatalistic, but not a surprising opinion from FZ, he was ever the realist and quite the cynic...