Ask HN: The sustainability of home delivery?

It seems that it's becoming more and more popular to attempt to live a sustainable life.

Not owning a car, adhering (or trying) to "zero packaging", not eating meat, purchasing things from ethical sources etc. etc.

One glaring blind spot (to me anyway) is in home delivery. I have Amazon Prime and it's astonishing that I can click a button and start a logistical process that has a person arrive at my door the same day (or next) with a small package of coffee.

This must be a huge waste of resources, and I'm interested to know are there any studies on it? Is it as wasteful as it appears, and if so, where does it rank in comparision to eating meat or driving a car