Homomorphic encryption + smart contracts = an immortal, non-subpoena-able lawyer holding your signing keys in trust, who can continue to act “as you” even after your death. That’s useful, no?

Add a cryptocurrency wallet for which the signing keys are the private keys, and now it’s more like an immortal, non-subpoena-able corporation executing your desires using its treasury assets. (Which can include hiring real people to do real-world things, and even—given that you could provision crypto mining capacity—making income to keep said corporation’s actions [relatively] self-sustaining.)