When my husband was alive, I did most of the shopping; he used to shop when he was cooking, and stuck rigidly to his list of ingredients. What we avoided - we both disliked it - was shopping together. We each shopped in completely different and incompatible ways.
I used to notice helpless-looking men standing in the aisles, holding on to the trolley like an overgrown child, and I would think, "What are you even doing there, getting in the way? Why don't you stay at home, or sit in the car and read the paper?"
For better, for worse, but not for Sainsbury's, that's what I used to say!