I was just looking at the coinmarketcap table since 2013, I was surprised in what I saw, many coins topping the charts then are now almost non-existent, we need to be careful of the kind of coins we hodl especially for long term. Most of these projects just die after the initial hype.
I too invested on altcoins before that are now dead. Most of them are only active on the first but when the bear market came all of their development stopped. This is why we need to be more careful on altcoins that we are going to invest in.