Credit Source Warren Buffett’s longtime business partner and billionaire investor Charlie Munger’s contempt for cryptocurrencies seems to be rock solid as he once again made a scathing attack on the rise of cryptocurrencies while applauding China’s decision to ban them. Calling crypto boom “insane”, Munger said, “I’m never going to buy a cryptocurrency. I wish they’d never been invented,” The Sydney Morning Herald reported. Munger was addressing Australian investors at the Sohn Hearts and Minds Investment conference in Sydney. “I think the Chinese made the correct decision, which is to simply ban them. My country – English-speaking civilisation – has…