Food was way more expensive back then; the additional expense of having milk or bread brought to your door was much smaller. https://www.ers.usda.gov/webdocs/c

Food was way more expensive back then; the additional expense of having milk or bread brought to your door was much smaller. https://www.ers.usda.gov/webdocs/charts/58066/aug13_datafeature_volpe_fig03.png https://www.ers.usda.gov/webdocs/charts/58066/aug13_datafeat...