It's worse... sometimes you forget your bag or go to buy something unplanned. And after a decade you have more reusable bags at home than you will ever be able to use up in your life.

Same here. My oldest are about 18 years old now. And I use them for everything, not only to go shopping. I have the feeling they don't understand the reuse part of reusable.

Statically the majority. Supermarkets are selling a bag per about 100 in purchases. From that you can deduce that the majority of people are only using them a few times.

UK supermarkets sold 1.5 billion reusable bags in 2019. That is 57 per household per year.

https://www.cnn.com/2023/03/13/world/reusable-grocery-bags-cotton-plastic-scn/index.html