I had high hopes for crypto, then I left ignorance. Insane high transaction cost, and time that gets worse as network gets popular and bigger. Highly unsafe as

I had high hopes for crypto, then I left ignorance. Insane high transaction cost, and time that gets worse as network gets popular and bigger. Highly unsafe as losing a key meant all of it is gone, no customers service. Insane amount of electricity consumption. All big currencies are mostly owned by few unknown individuals/wallets. Highly speculative price despite it being out for 10 years.