Art is a "Waste of Time"

Well, no, it isn't as it happens.

In the last twenty four hours I have:

Minded my own business before the discobolus at the British Museum.

Paused briefly as I wandered  through a room devoted to sketches by Pablo Picasso.

Sat, mostly awake, in a theatre whilst persons unknown, re-created 'Billy Budd' by Benjamin Britten.

I am changed by these things. 

Which, I read, is the purpose of art.