They are important to me…especially with something like dairy or baked goods.
At my local Stop and Shop they seem oblivious to these dates…and I routinely find yogurt and other dairy products well past their expiration dates. I feel bad for folks who don’t check!
I used to put the expired stuff to the side in the hope someone working their would notice and remove it, but once observed an employee simply place the old items back on the shelf. Now I place the items on the floor or bring them to the customer service desk so the manager can grunt at me.