
Stanton D. answered 12/28/21
Tutor to Pique Your Sciences Interest
Hi Sampson,
There could be other reasons too. Old wine may tend to deposit solids on the inside of the bottle. Some of these are mobile (and when you pour that wine, you must avoid pouring them into a glass!), but some of them are crusted inside the bottle. When the bottles are rinsed before use (if they are!), such a crust would tend to be retained and would present a splendid hide-out place for various bacteria and molds, especially the bacteria responsible for turning ethanol into vinegar. Therefore, your wine would rapidly turn into vinegar, or to other nasty-smelling organic materials.
Not to mention, bottle-makers need to be making more bottles, or they starve!
-- Cheers, --Mr. d.