Because perfectly good alternatives don’t exist? i.e. glass is far more expensive to produce and ship, it’s heavy and brittle etc. Glasses are great, and have

Because perfectly good alternatives don’t exist? i.e. glass is far more expensive to produce and ship, it’s heavy and brittle etc. Glasses are great, and have some wonderful properties, but so do the the various plastics–they’re responsible for raising living standards for millions of people.