The speculative boom in digital assets should arguably make physical assets even more valuable by comparison. The care you need to invest in protecting a physical object from floods, fires, theft, wear and tear, UV light, etc. should accrue to its value. The only way NFTs can disappear or disintegrate is if owners lose the keys to their crypto wallets or have them stolen: https://www.businessinsider.com/stolen-nfts-on-nifty-gateway-reports-nft-art-marketplace-2021-3.