Why do amateur performers still flourish?

Chesterfield is a medium-sized town just off the M1, near what were once the coalfields of north-eastern Derbyshire. Not without history (and a lovely old market square) and not without character (a church with a splendidly warped spire, positively Van Goghian, is its most famous feature), the town is nevertheless an unassuming, formerly industrial north Midlands community which earned its living until recently from a steelmaking and coal-mining regional economy.