@researchfairy Related frustration: many stores here now only sell heavy-plastic bags that need to be folded and are difficult or impossible to ball up and stuff into your pocket. Which is probably a good part of why people rarely reuse them!
Meanwhile I bought a handful of cotton bags from Lidl like a decade ago when they had those for a brief period, super sturdy ones, easy to stuff into a ball, washable, and we're constantly using them to this day, with not a single one having broken or become otherwise unusable in that time. Like, if it fits, it'll hold it, guaranteed.
But for some fucking reason no store sells these kinds of bags anymore. It's all just heavy plastic that's annoying to transport and impossible to machine-wash. I ended up buying a bunch of extra ones at an Aldi in Germany when I was there for an event, because they haven't been available in NL for years...