All very good points.

Centralization to a degree can be healthy and effective, but right now with how the monetary is running central banks & banks have way too much control. Firstly, the USD as well as other fiat currencies do not have a decentralized protocol of releasing new currency into circulation, which means that over the long term you'll see fiat depreciate in value, and eventually collapsing without exception. Bitcoin has a limit to the amount of coins that can ever be in circulation, and thus tackles that problem.

Commercial banks, as we have seen, have absolute control over your accounts. They can suspend transactions, freeze accounts, do all that. We've even seen them do this to crypto related transactions, and say that they don't accept these transactions altogether.

These are all reasons why I'm personally invested in BTC in the long term, and why others are too.