I think the price of bitcoin in the future, in my opinion, may be that many will continue to use bitcoin and invest in bitcoin, but I only feel for a few years. For another 7 or 10 years until 2020 I still doubt whether bitcoin will still be used by many people and invest in bitcoin or bitcoin will decline in the value of its selling price. for which altcoin is good, I can't predict altcoin will exceed bitcoin, but if compared to other altcoins, maybe it still can.