Please stop putting all cryptoassets together. Bitcoin is not equal to, say, Filecoin or Avalanche in many ways. For some cryptos, the tokens have an intrinsic value based on the service offered by the network. Filecoins will actually get you data storage, which has value, as a service. When running smart contracts on other people's computer with Avalanche, they compute stuff for you, as a service. This cost some fees in exchange, which are paid in tokens.

The fact that you believe that ALL crypto has no value created talks of lack of knowledge of many projects out there. Although I do agree that Bitcoin shouldn't be used as it is rn.