Comment by Etheryte

I tick all the boxes you listed after having worked in a handful of different countries, but personally I don't really see the value add. My bank shows an overview in my main currency of choice and so do brokerage accounts. Perhaps to turn the question around, what value do you get out of it for personal finances? I wouldn't really compare to a business too closely since understanding all of your input costs down to a fine level is much more important there, at least in my opinion. The price of flour doesn't matter too much to the cent when you buy a bag every now and then, but it matters a lot when you're buying in tons.