If they only would put it in glass bottles again. I would so love that. Growing up we were pretty much country and poor, so we didn’t have milk delivery, but we did have a dairy store. It sold the milk in returnable half gallon bottles and the cream in little pint bottles. I don’t know if glass keeps milk colder or if just the sweat on the bottles makes one think so, but I know it makes it taste better. Our treat was a couple bottles of chocolate..
One way glass containers are on the way out. For many products we by buy, the container cost is more more than the commodity itself.
The good old days - we lived on the edge of town and did get the glass bottles. I agree it was better. We also had the Manor Man who came weekly - great cinnamon rolls and wonderful fresh bead. Between the two deliveries, the garden, a couple of calves, a few hens and a couple of pigs, I don’t remember ever going to the store.
Glass containers are more air-tight than plastic. The standard glass milk bottle was also limited to a quart, so the milk likely stayed fresher than the modern gallon plastic jugs; which take longer to use up once opened.