For me, Altcoins that do have a future are those that can be able to adapt and survive into any circumstances or challenges being brought by the volatile market which makes them to evolve or improve their prices despite of the downfall and known for their credibility and reliability as a coin even the market is down. Once that Altcoin have surpass the challenge of a down fall market and continues to survive after it, for me it is an Altcoin that do have a future because it must not be easily downed for it has a high quality that makes people believe on it and rely on it added by people still continue to bring demand on purchasing it for they hope that the Altcoin have future to grow and improve in terms of price and every aspects needed to be considered.