There are some old coins that are still sitting in my wallet; Litecoin, DASH, and monero. I have already traded most of my old coins into the new coins that is still booming right now just like tezos, chainlink and some other coins with real product. There are so many old coins that were dead right now and i have taken the decision to decrease the risk by converting a lot of my old coins. I think others will have almost the same choices.
I agree with you, even the old altcoin that you hold is also one of the assets that I still hold like LTC. I also don't want to take a lot of risks so I prefer new altcoins like TEZOS, BAT, CHAINLINK & OKB, they are new altcoins that have great potential in the future according to my personal analysis.