Discussing crypto investments will not reach a point of mutual agreement, because some of them want to focus on technology and other parts want to get instant profits. Investment in bitcoin and altcoin is like speculation that has no end because speculators definitely want prices to go up even though in reality their technology hasn't arrived at the function that many people want. So, in my opinion. if you want to invest in bitcoin it's good and for altcoin it should be used as a short trade.