It's not clear that it's still possible to function in society today with out a cell phone and a cell phone plan. Many things that were possible to do before without one now require it.
> - One can give up laptops, desktops, gaming consoles, internet service, and paid apps/services. That can save another $100/months in bills and amortized hardware. These were a luxury 30 years ago.
Maybe you can replace these with the cell phone + plan.
> - One can give up imported produce and year-round availability of fresh foods. Depending on your family size and eating habits, that could save almost nothing, or up to hundreds of dollars every month. This was a luxury 50 years ago.
It's not clear that imported food is cheaper than locally grown food. Also I'm not sure you have the right time frame. I'm pretty sure my parents were buying imported produce in the winter when I was a kid 50 years ago.
> - One can give up restaurant, take-out, and home pre-packaged foods. Again depending on your family size and eating habits, that could save nothing-to-hundreds every month. This was a luxury 70 years ago.
Agreed.
> - One can give up car ownership, car rentals, car insurance, car maintenance, and gasoline. In urban areas, walking and public transit are much cheaper options. In rural areas, walking, bicycling, and getting rides from shuttle services and/or friends are much cheaper options. That could save over a thousand dollars a month per 15,000 miles. This was a luxury 80 years ago.
Yes but in urban areas whatever you're saving on cars you are probably spending on higher rent and mortgage costs compared to rural areas where cars are a necessity. And if we're talking USA, many urban areas have terrible public transportation and you probably still need Uber or the equivalent some of the time, depending on just how walkable/bike-able your neighborhood is.