[MargaretR]

I recall the old syle bottles were thicker glass than the ones we get now.
They were made to be recycled - the fragile thin ones aren't.
Using stronger thicker glass will cause production problems for the drinks manufacturers and will increase the cost of the products (even before the surcharge is added)

I don't like the plastic bottles, and the thought that they have been used before makes me shudder at the hygiene implications - ie. you can't scald a plastic bottle clean.