I read the Bitcoin whitepaper and I find blockchain a terrible and entirely inelegant technology. It is horribly inefficient and I can think of only a handful o

I read the Bitcoin whitepaper and I find blockchain a terrible and entirely inelegant technology. It is horribly inefficient and I can think of only a handful of domains where blockchain's properties would outweigh its problems. Cryptocurrencies with no central issuer are possibly one such domain, but do we really need them (esp. at that environmental cost)?