There is also no way of predicting how the given type of crypto asset is going to change in value in near time. What is considered to be worthless today might be valued the following day, and this is a common occurrence in the crypto space. Some stockholders may consider keeping the stock that you already have without necessarily having to make a decision to sell it or invest in it within some time for those who believe in long-term investment. There is always risk involved, however, if the particular asset is stored safely there is not much that one loses until the moment when one decides to sell the particular asset. All the events are possible, and it is impossible to say something about the future beforehand.
Of course. Investing in crypto is all about risks. Especially when it comes to altcoins. They're more volatile than Bitcoin itself. I'd stick with top-ranked altcoins in market cap just to be safe. Still, this isn't a guarantee your investment will last a lifetime. In the early days, Peercoin was the fourth-largest cryptocurrency by market cap only to be lost and forgotten today. It's best to keep an eye out for the news and market movements to determine the right time to sell before it's too late.
If you've invested a lot of money into a "dead" coin, your only option would be to preserve the private key or seed with the hopes of seeing a relaunch in the future. Otherwise, I'd suggest you "burn it all" (not literally, just erase traces of your wallet data) and forget about the rest. It's your choice.
