system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Benefits and disadvantages of a country having it's own currency.

Specially in a time where the dollar is so strong, I don't understand the repercussions of some stuff, and why countries like Argentina don't just convert to dollars.
gpt
Think of it like owning a house vs renting. If you own a house, then sure the problems are your own, but you can control renovations, remodelling, you can tweak things as you feel you need it.

Renting means ultimately you are at the whims of the landlord (lets pretend you had no tenant rights, as would be the case in the currency thing). They dont have to repair anything, they can turn off your heat/water if they feel like it. They’ll set the temperature to whatever feels best to them, regardless of what you need.

Maintaining and controlling their own currency is pretty important to a governments ability to control their own economy. Some places like the EU have actively decided to shift that responsibility to a central organization, and hold outs like the UK have refused to give up that sovereignty.

It is also worth noting that per unit there are stronger currencies than the US dollar.