Why will proof-of-stake never happen?
The only theory I'm aware of, which the "proof-of-stake" approach is based on, is some form of "game theory", my translation - "people won't do evil stuff since it's against their interest", which generally aligns with people being rational and basing economic theories on top of this thesis.
My understanding is every POS blockchain is centralized and not secure.
Can you name a POS blockchain that you think has achieved sufficient decentralization and security so we can test your claim?
PS: How about answering the question instead of preemptively downvoting and attempting to shutting down the conversation. If POS truly works, you should be happy to provide an example or even multiple examples. Any reluctance is a red flag...
ETH POS has many of the bad characteristics current central banks have...