John Dinon has lived with motor neurone disease (MND) for almost a third of his life, making him one of the longest-surviving people with the progressive neurological condition in Australia.The Queensland grandfather celebrated his 90th birthday last month, a milestone he and his wife weren't expecting to reach."He didn't think he would last that long Almost 66 years," she said.Mr Dinon was the local butcher in a small country town in South Australia