in holding the coin please make sure that the coins could be developed in the future and will have a high price. ethereum, bitcoin, and ripple. within the next few years, maybe three to four years this coin if my prediction can achieve multiple of that exist today. but that's just my prediction only, with the result we saw only. 
There are too many altcoins that is being launched and hit coin exchanges while they have not yet working product or main net.
That's why that affects the price value of the coins because users doesn't have access or benefits to crypto projects.
That's why most of the crypto projects today are more on decentralization and data centered technology and almost everything you ever think of were been already realized by some developers and Crypto organizations.