It does two things: 1) a cache when one door is open, 2) and prevents drafts (from improper sealing around the door) like OP said. Insulation of the door is another component of the second part.

Well businesses use them because there is so much traffic coming and going. Hope you don’t have that much at your place.

I could only think that we have better weatherproofing around doors now (and better doors themselves too with better insulation). And the rest of the house is better insulated and air tight too, so less of a need. We used to have screen doors that cut the wind as well, don’t see many of those but those could come back. Interesting idea but I can’t really see them coming back, especially with many new houses being those small skinny houses.

This is the UK

Daniel Shaw, Louise Lancaster, Lucia Whittaker De Abreu and Cressida Gethin were each sentenced to four years in prison this week after being found guilty of planning disruptive protests on the M25. A fifth defendant, Roger Hallam, was sentenced to five years by a judge who said he “sat at the very highest level of the conspiracy”.

We’re counting Mexico as an oil country?

Well I think she’s gonna have her hands full on violence.

*Number 13 behind Brazil, Kazakhstan, and Angola for exports. https://en.m.wikipedia.org/wiki/List_of_countries_by_oil_exports