> That’s what a market is.
To win me you need to consider the difference between a free market vs. a coerced or highly regulated one; the dynamics likely change.
> even central governments don’t set the value of money
And the difference between real and nominal rates? I'd say your statement is largely true but that doesn't mean a central bank doesn't try to manipulate real rates. That's actually their charter... price stability.
However, there is a strong argument to be made that they're not very good at it and can make things worse. The last year of exceptionally high inflation is a rather obvious real-world example.
> Nobody needs you to keep money in a mattress
Maybe true, but the question isn't what do others need... it's who gets to allocate my capital? I contend it should be me, you seem to think otherwise. Why should the government actively try to de-value people's savings? Is it a good thing to squeeze elderly retirees back into the work-force?
This is what you're implying when you say "Devaluing in-the-mattress savings is a good thing". It could be a bad thing; again esp. for pensioners and people who don't have better investment opportunities.
It's not just a question of "does the theory hold water" but also one of morality. This is why I think the phrase "in-the-mattress savings" is loaded and full of hooey. It just sounds like you're telling me I'm an idiot and can't be trusted to spend my own money wisely? It's not convincing and quite insulting to boot! Lol
I believe savings is always a good thing and it's up to the individual to determine their own preference in terms of allocation; some under a mattress and maybe some in a shoebox or some short General Dynamics puts.
The point is it's up to the individual. Why should someone else have a say when they haven't been entrusted? That is the very gist. Why should someone else have a say when they haven't been entrusted?
Freedom and liberty vs. tyranny. That's it... you're going to have a hard time convincing me that financial repression is the moral high ground.