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what should make bitcoin attractive to new "users" (i'd rather refer to them as "investors") is that they would see in it kind of a parallel way (if not the only way!) of securing their wealth, bypassing the banksters' bails-in and their sand castle of degenerated financial vehicles.
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Let's try to stay pragmatic here. Two simple questions:
1- How would that be different than beanie babies or investing in shares of dormant company? You basically invest in hope that some other 'investor' will be happy to pay more for your 'investment' and nothing more. What would you need blockchain for then at all? If there's no practical use, why not replacing it with limited edition, hologram protected paper 'certificates of nothing'. Seems much better, as there will be no mining costs etc.
2- If you take away everything and are left with 'investment' use only, that means BTC practically don't exist outside BTC/fiat exchanges (regulated, with KYC/AML). So where's that protection from banks/governments you're talking about? If you kill all the other infrastructure (or give it away to altcoins), what will you do with your bitcoins if exchanges start/are forced to restrict your funds?