Why I can't sleep soundly with blockchain, being the cypherpunk

There is so much hype about blockchain technologies! Everyone is
fascinated about it, dream about wonderful bright cryptofuture, and
stops talking with me, when hears that I do not find blockchain either
interesting or useful.

Why I do not like blockchains? Actually *if they would work*,
from cryptographic point of view, then I have nothing against!
Distributed trusted databases, timestamps and consensus making are great
things to deal with. But unfortunately I see that at least Bitcoin (the
biggest blockchain in use) has already failed without human-initiated
=> regulations
It failed from *cryptographic* point of view.

I am cypherpunk and I am very interested and excited about cryptography
subjects. Why? Because all of that is based on math and assumptions
about practical impossibility of reverting many functions (you know,
some kind of "2^100 of operations are required for ..."). It is valuable
because you do not have to trust and rely on people *at all*.
Well, except for cryptographers and similar scientists. People are the
problem #1 in all security questions. They can be bribed, all of them
have their price. They are error-prone, not reliable, lie and misbehave
easily. I can not sleep soundly, knowing that I depend on some human.
Cryptography world gives unbelievable possibility to eliminate them!

If I can easily remember relatively long passphrase (100-120 characters
in practice) as a key to proven strong authenticated encryption
algorithm, then I am confident that my data is safe. I can use
eavesdropped links and virtually any potentially vulnerable storage when
cryptography is applied correctly. While noone ever know if quantum
computers powerful (big) enough will be built, RSA/ElGamal/ECC stay
pretty safe too. I really love the fact of security risks estimation
possibility, based on current technology state and progress. People can
fail you anytime -- only *hope* will keep you calm.

Are you afraid of algorithms breaking possibility? Even one of the first
encryption algorithm used in computer era -- DES, is still useful and
secure enough in 3DES composition. If you are still frightened, then
learn from soviets: their
=> GOST 28147-89
block cipher, created in 1970s, still has more than 2^200 security margin.
Who the hell knows what
=> "key meshing"
means? But that block cipher has that kind of thing, making it immune to
Sweet32 attack, appeared dozens of years after. Do not overestimate
value of performance, by sacrificing its security -- perfect advice for
sleeping well for years.

But what about blockchains? Citing Ethereum's
=> "problems"
wiki page:

    While a cryptographer is used to assumptions of the form "this
    algorithm is guaranteed to be unbreakable provided that these
    underlying math problems remain hard", the world of cryptoeconomics
    must contend with fuzzy empirical factors such as the difficulty of
    collusion attacks, the relative quantity of altruistic,
    profit-seeking and anti-altruistic parties, the level of
    concentration of different kinds of resources, and in some cases
    even sociocultural circumstances.

Everything is right here. Anyway you *will* depend on people,
society, its behaviour and huge quantity of empirical factors and
assumptions. It is not cypherpunk's reliable and risks-predictable world
-- it has nothing in common. Replacing the need to trust the human, with
the need to trust the algorithm and technology -- that *is* the
exact reason why I am interested in crypto. Requiring and depending on
society again -- that is the exact reason why I standing aside from
blockchains. They do not offer
=> any guarantees
but likelihoods, lottery.

Cypherpunk must rely and depend on people as little as he can. Remember
=> cypherpunk's manifesto
spread as little unnecessary information as possible, because people
*will* find ways how to harm you with it. And blockchains are
broadcasting permanent storages, where most of them (with
=> Zcash
exception for example) give you neither privacy nor anonymity for your
personal (private) transactions.

Also there is good article:
=> Blockchain is not only crappy technology but a bad vision for the future