I just noticed that my sweetie and I do the same thing: just as it's not the Done Thing to go to a concert wearing that band's shirt, we never carry a reusable bag to the store it came from. Trader Joe's bag at Vons, Carrefour bag at Trader Joe's...
@mt_head
Yes. Those who ignore that maxim will fall under permanent control of third-party powers whose relationships with the band or store were brief and untraceable.