Bitcoin has value because miners have to buy equipments, pay for energy to mine it.
Bitcoin supply is limited at 21M, people invest in Bitcoin because it has many features that fiat don't has and they hope the price woud increase.
well enough reason to say that Bitcoin really has a value mate,but remember that since this market is volatile the possibilities that price may fall is always there but also chance of going high is there because the 21 million bitcoin limit is now more even lower because of forgotten password /private keys that has Bitcoin inside their wallets and ledgers.so all in all there are many arguments but literally?yeah Bitcoin has a value.