So why does a poor East London church need a pipe organ, anyway?

At St Andrew's Leytonstone we're hosting a hymnathon this weekend, to raise money for the repair of our pipe organ. Fundraising is going well, but there have been some questions. In this time of austerity, unemployment and recession, what are we doing raising money to pay for the repair of an instrument a century old? Can't we just get an electric organ, and spend the money on more useful things,...