Altcoins are going to pump, not because they are fundamentally great, not because they are actually used, not because of a good team. While the whales have been profiting from the rise of bitcoin, they make the alts so freaking low that almost everyone will sell at a cheap price, once everyone has sold alts for BTC they wanna get in on the bitcoin train, the bitcoin train completely dumps leaving bag holders scratching their heads. Few days later the same alts that you just sold for half the price will start to majorly pump, whales use their bitcoin profits to buy alts on the cheap, once you have given up on the alts, they start to pump. Its all a game ladies and gentlemen. Lots of manipulators, fraudsters, this game is unregulated. Have you ever played street ball? Remember how different it is than playing high school ball game? Same deal here.
Greed is the killer of all trades.
Fear is the poison of all trades.
Not sure how low bitcoin can go before alts pump, but I will say that alts WILL pump. Start DCA these alt coins slowly, the bottom may be in or at least close.