Its impossible to have one or two coins in crypto space because one or two coins can't solve all the problems we have in this world in every aspect of technology or others, if you want to keep a coin for a long time make sure the coin or token solves one or two problems in crypto space or the world, this type of coins don't die easily because they have real use cases, its simple as that
You are absolutely correct. Every use cases there has a coin for that. And if your coin doesn't use cases today or for the future better to sell it now why the price is good. But real thing we need to do is to know first the valuable thing of the coin that we wanted to hold for more that a year.