My understanding is that this choice is a balancing act between having good efficiency for long distances transmissions (230v) and having a lower peak load in t

My understanding is that this choice is a balancing act between having good efficiency for long distances transmissions (230v) and having a lower peak load in the grid (110v) for desely populated areas. But I'm no expert in this matter. Where I live (Brazil) is commom to have both. In the big cities you will find 110v and outside that you are more likely to find 220v. And yes, it is a pain if you move from a 220v city to a 110v one. But besides that most people don't care about having 2 standards. For anyone interested there is a semi-relevant TechnologyConnections video[0] where he discusses the popularity of kettles as way to heat water in the US. [0] - https://www.youtube.com/watch?v=_yMMTVVJI4c https://www.youtube.com/watch?v=_yMMTVVJI4c