I could be misunderstanding this, but you know that you can buy ETFs that are currency hedged?
Taking Vanguard for example, VGS is global equities, but VGAD is global equities that are AUD-hedged (my home country).
The only downside is that you pay more in fees (and they're less tax efficient). People generally don't bother with it though, because on a long enough time-line currencies usually revert to their long-term average, so if you're holding for retirement there's generally little point.
This is a _huge_ downside for index funds, though. Even quite a small fee difference has a huge compounding impact over time; people often miss just how much.
AIUI, assuming you're investing in a global equity fund, currency hedging is almost never worth it. It _may_ be worth it in some cases if you're investing in a foreign index (eg S&P for Europeans), but even then not usually.
Let's say I'm close to retirement. And let's say I'm in US dollars, and the dollar isn't doing well right now, and might continue to not do well for a long enough time frame to matter to me.
On the other hand, my expenses will also be in US dollars. To what degree should I hedge against the dollar?
Hard question to answer without understanding your circumstances.
Ultimately the point of hedging is to diversify. So the degree you should hedge is relative to the degree with which you have exposure to your home currency. So for example, if you already own a home in that country + you already own lots of shares in that home currency, then hedging might be less important.
The recommendation I've seen is around 25% of your portfolio in hedged global equities, assuming you have another 25-30% in non-hedged global equities.
You also can't predict when you might need to sell you stake, so that's ultimately the value of hedging. If you're forced to sell in 5-10 years, then hedging would be valuable.
Everyone wants to park some money and have other people work hard to increase the real value of said parked money. Not everyone can win big. Storing value is actually pretty amazing thing and that it can be profitable is magic. Of course the environment and poorest pays some of the free lunch.
An investor friend once told me that the US needs to always be in debt because treasuries give investors a risk-free place to park their money between investments. The sense of entitlement was astounding.
I don't think this is necessarily entitlement. There are heteredox but popular economic theories (such as MMT) that view public debt issuance at least in part as a method to satisfy the demand for private savings.
it really depends on whether or not there is a global capital shortage. this is very easy to do when the economy requires much more capital than is available. and in the inverse, it is self explanatory
There is no 'cure' per se as a non-US investor currency risk is just something to accept (or swap return for a hedge but then it ends up being a wash mostly), for example if you invest in a World equities ETF, it's a bit pointless to be hedging exposure to all the currencies. Even if you decide to slant away from the US, it's likely a majority of non-US large caps have USD exposures.
It's more a psychological thing, you see absolute USD return and think you could've made that but there's not the actual return, your actual return is post conversion, if you'd have hedged you wouldn't have that abosulte return either, so you've never had it.
Additionally, if you're like most people and investing regularly or DCA-ing from now on you can buy at lower USD
Actual return is for non-US investors having to convert back to say Euros for retirement, after having the dollar weaken, you get less Euros for example
Taking Vanguard for example, VGS is global equities, but VGAD is global equities that are AUD-hedged (my home country).
The only downside is that you pay more in fees (and they're less tax efficient). People generally don't bother with it though, because on a long enough time-line currencies usually revert to their long-term average, so if you're holding for retirement there's generally little point.