Yes, I'd like to be able to keep a longer run of groceries on hand. I'd like to be able.to wash curtains or duvets. I'd like to be able to easily cook the main course of a popular holiday.
I have a 20 minute drive to a grocery that has everything I need, so I want to do it less frequently. I use my duvet every night so it needs to be cleaned weekly.
Appliances are to do things. I want to do more things more easily.
Fridges store food. I don't want my appetite to dictate the size of my fridge, but the freshness of vegetables and such.
Washing machines wash things. I want to be able to wash all the things I regularly use without any loss of performance.
You can't tell me, that all things being equal, you'd prefer a smaller washer. Or that you want to think / guess about the available space in your fridge if you're at the store and looking at a purchase at the grocery. "Hmm I want this for a meal, but I don't think I have space for it" is not and ideal statement.
You would not build a rail/bus/hovercar between me and the grocery, even with europlanners.
Ultimately this does not address my later point: I never worry about if I have space to house a food item I want. When I lived in the UK, in a detached house with a "normal" kitchen, I often thought about the available space at home, while I'm standing in the store. That's silly.
Lastly, in many densely populated areas (like Manhattan) you still get full sized fridges, so your euro-density-pubtransit argument again fails.
Many folks absolutely could walk/bike/train to a grocery, but you can be sure they have full sized fridges 99% of the time.
You shouldn't need to catch the train to get to the grocery store. There should be one walking distance from your house. American city planners don't allow grocery stores to be built in residential zones because they're bad at their jobs.
I think it's just a difference between European countries with good government and the rest of the world in the way big industrial areas were repurposed after industrial production moved to other parts of the world. In the last 30-40 years.
They may expect a good modern city to look like some old-old districts formed in the times where traveling far for groceries wasn't an option, surrounded by those big repurposed areas with regular planning and a lot of modern bright shiny stuff on the place of old factories, warehouses etc, and with good public transport.
We have 400V/16A, three phases, in kitchens for the proper stuff. That's 19kW, if I remember correctly. Your strong power is like our standard power (240V/16A).
Here in the UK you can have 240V x 32A with three phases. That's how you get domestic 22kW chargers for EVs, lol. Regular single phase kitchen wiring is 240V x 32A giving us 7kW hobs.
120v should get you a similarly fast boil if you have the same wattage (meaning you double the amperage compared to the 220-240v circuit). Most appliances are designed for standard circuits though, which in the USA are 120v at 15A (1800W peak, 1440W max constant load)
Having a small fridge and going to the grocery very often vs having a large fridge and going less frequently tells you nothing about calories consumed.