Every time I have visited my family in Australia I have been horrified at the excessive use of plastic bags in supermarkets. They hung on a little Carousel gadget at the till, and the checkout person merrily twirled it around, filling, or only half filling bag after bag. Anyone taking their own bags was given rather dirty looks, as it delayed the checkout routine.
This year, hurrah, gone are the plastic bags and twirly things. Bags for life are on sale, and people are getting used to taking bags with them to the shops. Oz is, finally, getting an environmental conscience!
As for me,I have been using my own bags for years. I home-make them from old clothes, so they are a colourful bunch. I also have two fold-up nylon bags in my handbag for emergency use.