Bitcoin will be valuable if the world needs a decentralized digital cash and money transfer network. Looks like we always do because government will always have the temptation to tax its people via money printing. Ether will be valuable if the world needs world computer credits to build and use unstoppable apps. Unstoppable privacy. Unstoppable casino. Unstoppable referendum? Imagination is the limit.(曾嘉俊 Zeng Jiajun)