Other technically superior cryptocurrencies (e.g. Monero, Ethereum) have replaced most of its usecases, boasting much faster and cheaper transactions and real anonymity in the case of Monero. Bitcoin takes more than an hour even at absurd transaction fees of multiple dollars, and is actually pseudonymous, meaning if you can associate an address with a real person, it becomes relatively easy to trace all their transactions unless they were careful to cover their tracks.
It may or may not continue to increase in value long-term, but it has little uses outside of being worth a lot of money.