What's more, you've shown that you know enough about cryptocurrencies that you know this.
You are arguing in bad faith.
I disagree.
I'm ultimately arguing that this:
> I understood it that if I keep the private key secure, nobody can take it away from me.
Is demonstrably false, both from a practical and a technological standpoint.
I've more faith in developed-world governments than I do in Bitcoin's miners.
Which you won't do, because you can't.
What's more, you've shown that you know enough about cryptocurrencies that you know this.
You are arguing in bad faith.