75% of the time I forget to take a bag to my car.
As well as all the single use bags (paper and plastic) I bought, I also have jute bags that I got years ago and are still holding up. I like them better as they are bigger and stronger.
Even if I managed to get a bag, the other 75% of the time I forget to take it into the shop and leave it in my car.
Even if I manage all of that, 25% of the time I will end up not having enough bags.
What I would like to see is some kind of deposit system with stronger bags (like my jute bags). Then when I actually remember I can bring them back to the store for someone else to use.