This just seems so crazy, to think of 120V. I haven't seen a house here with 120V in my entire lifetime. It sounds like a relic from the past, like the kind of thing people used back when they rode horses.
Hmm, I'm having trouble understanding what you mean. 120V is the standard household plug in North America. If you're in, say Europe, I don't imagine you'd see a house with 120V as IIRC, 220V is the standard, and you generally have to connect to your local grid. I think the parent's post about 120V was about international devices that may have to work in North America, for instance.