I have all of these coins:
ETH 40%
CARDANO 20%
POKALDOT 20%
TERRA LUNA 5%
THETA 15%
Avax: 10%
Are my coins going to last is it likely?
ETH, Cardano, Polkadot and Avax are probably going to survive.
But if your only objective in investing is to make sure that your coin survives, arguably you're investing for the wrong reason.
ETH i think can really take the drivers' seat in future bull runs given its infrastructure, tech and adoption. I don't think that Cardano will see much actual usage past this current period of hype though.