Bitcoin is more than just a currency, it can help solve the dangerous problem of

[epere]

Bitcoin is more than just a currency, it can help solve the dangerous problem of centralizing password storage. If you lose your PGP key, or get it stolen, you're screwed. In Bitcoin land we have native multisig. There is discussion of multi-sig PGP, which is certainly possible, but AFAIK hasn't been done. I think more importantly is that Bitcoin necessitates safe crypto, which is leading to things like Trezor, which makes secure logins much easier and safer.