MIKE TAYLOR , a successful art historian at the British Museum, has turned his back on London to seek the simple tranquility of a croft on the Isle of Skye. PETER BRADBURY and his wife have started a commune with 11 other families in a former Suffolk friary. Kieran Prendiville and a Man Alive team. have been talking to people who believe they have found a richer and more rewarding way of life. Not by opting out but, they believe, by pioneering the way more of us could - and should - live.