I have amassed a large number of Bags for Life from various supermarkets and always try to use matching bags for the shop that I am visiting if I have any - I use Aldi bags in Aldi and Tesco bags in Tesco's and so on.
If I don't have enough of the right bags I am happy to use non-matching bags (I'm not completely mad) but I will always start with the "correct" bag.
Am I the only one?
AIBU?