Allow me a little game: what the Dutch who do most of their trip by bike eat? Because today too many pseudo-ecologist claim the live at 0km, meaning they do anything in a small enough area to move just by feet and bike. HOWEVER they omit in their computing the other humans who work to serve them.

Time ago a friend claim he live at 0km and we start a little game: let's show what you eat&drink! The 0km bread bought from a local shop actually was made with a flower+the rest prepared by a local company roughly 800km away, with the flower itself from Ukraine, leavening agents from Turkey, salt from Spain. Oh that's just the bread. The locally bought seasonal fruits, let's say and apple came from north-est Italy, and I choose the apple as an example because they are normally collected one season before stored in a CO₂-saturated place and oxygenated a bit before going to customers-stores (so they look bright and big). If we try the locally bought "fresh" shrimp some are from India, some from Ecuador, they are fresh (in temperature sense) for sure, but seeing their color they are ALSO pre-cooked with a bit of steam before being packed and so on.

Personally having left (few years BEFORE covid) the dense European urbe for the Alps I change a bit my behaviors like I now bought not-that-small quantity of anything and stock them at home, it's MORE comfy for me, just going to the garage opening some freezer/wardrobes etc instead of going shopping just for a single item. The result is that compared I produce FAR LESS packages waste, I tend to eat more healthy foods and I even tend to pay most of the LESS. Stock them is also not that complicated at all, yes it might took a bit of time regularly, but it's really a little bit, and a small investments in fridges/freezer and so on. But again NOTHING really "extreme". I have two cars, one diesel one electric, I refuel both at home, the diesel one with a 1000l liters jar with a simple tube+spilling pistol filled up casually by a tank truck, witch means I and the supply chain combined burn LESS fuel to resupply than those who resupply continuously with their own engines. Again, nothing really special. Diesel it's not explosive, does not produce dangerous gases and can be stored for very long periods. Oh, and at any (regular) strike I never have to go wasting hours to resupply for having a bit of a very small reserve.

Long story short: PROBABLY (I can't compute everything) the most sustainable way of living is being spread in large not too dense, not too little dense areas pushing a distributed economy coupled with an effective PUBLIC logistic platform (to avoid the old classic Rockefeller/Standard Oil or now Amazon "market distortions") where we can evolve, meaning the density is sufficient to interact, have a reborn economy of scale that's now totally lost in cities, but not too much to impede redesign of anything, starting from residential buildings who can't really evolve in dense cities in Green New Deal terms or even in mere "they are EOL, we need to demolish them before they collapse", where there is room to evolve. Let's say future drone deliveries, fly cars etc. ALSO such areas are FAR LESS problematic to handle in case of catastrophic events (not even extreme like a nuclear strike eh! Just mere floods, wildfires, earthquakes, landslides etc).

This probably live a big problem: too much population? That probably imply without having the gut to tell it directly that someone want to push "waste" humanity in modern slavery situations depicted as nice walled gardens, eco friendly etc. The issue is that such move can't work well not only for those internees but for the humanity at a whole. We are a society, it's normal to have rich and poor, but more than a certain level the result is a crash unhealthy for ALL.