Drago makes a good point but taking it further, we seem to just buy stuff that is over packaged and disposable.
Halfords for example used to sell concentrated washer fluid so the 500mil bottle made 20 Litres of fluid. I have one 5litre bottle that has lasted me 10 years by making up my own from concentrate. Now they have stopped selling it and only sell 5 litre bottles that are 95% water (or something like that).
Everyone seems to buy drinks made up in a single use container. Buying bottles of water and fizzy drinks. Then there is the whole culture of just buying cheap crap that then gets thrown away and replaced.
The carrier bag is just the outer layer of a much bigger problem.