I disagree.
I find Tokyo and even London, claustrophobic, I don't see that as my problem of skewed perception, but theirs.
Frankly, I oppose the existence of urban centres of 20,000,000 (region) for just this reason. It sets off unreasonable real estate values and commute times the solution to which is ever more 'micro' living which is expensive, and unpleasant.
When you have a 1/2 fridge, and no spare bedroom and zero closet space and no parking, you don't have a utopian life..........you have misery for most people.
Because in Paris and in Tokyo the majority of households own a car, and now they have to pay to park it, typically several blocks away, they have 'stuff' which doesn't fit in their apartment, so they have to rent off-site storage for more money, and they can't buy anything in bulk, or even take advantage of a good grocery sale, so their daily goods costs are higher and they eat out more and even great expense.
Add that up to the tension of living in a very tight space and the unaffordability of starting a family and you see a plummeting birth rate.
I say all this as someone who helped abolish parking minimums, owns a car but takes transit far more frequently than I drive, has over 1,000ft2 to myself, but still shops for food 3x weekly because I enjoy it.....and doesn't have kids.
But I find the idea of living in a tiny box abhorrent. I enjoy camping, and my gear takes up 40ft2 (2 tents, 3 sleeping bags, a cooler, a drink cooler, 2 air mattresses, etc.) I have sporting goods, badminton rackets and birdies, tennis rackets and balls,
I have seasonal decorations (Christmas Tree, lights, stockings, etc.), I have a tool box, a drill, landscaping equipment (pruners, shears, trowels, shovels, saws etc.). Lots of other stuff too.
I have a wardrobe of clothes I actually wear, 1/2 a dozen towels, room to store the large package of TP when it goes on sale, first aid supplies, toiletries etc.
I have a spare box of my engineered hardwood flooring, a booster pack for my car battery, spare paint cans of my custom wall colours.
One of my bedrooms is my home office, which I actually work from and typing in right now; while another is a spare for company.
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Here's the thing, all my friends call me a minimalist.
I like space around my furniture, and clear walking paths. I don't store stuff in public view, my walls have art, but its featured, not clutter.
If you want to live in 400ft2, I certainly wouldn't stop you; but if you want to insist others live in it cheerfully, I'll will strenuously object.