2 or 3 small items (like a magazine, a bag of chips, a t-shirt, a new dvd, etc.) can be carried in the hand easily to your car/home/office.
You don’t need the bag to carry your lunch & chopsticks from the shop. Soft drinks are designed to be held in the hand not in a bag.
Some of us cart around handbags that could easily accommodate a small re-useable & washable bag.
Say no thanks or I don’t need a bag before, during or after they give it to you. It saves the retailer money too.
Do you know plastic is made from oil – more plastic can help push up the price of petrol!