My (late) husband and I rarely shopped together. We made separate trips to the supermarket (he would buy just what he needed for the next meal that he was cooking; I would buy everything else.) We only went sales-shopping or clothes-shopping together when he needed to be involved in the decision - I would never take him clothes-shopping with me!
The tag-along role of husbands in supermarkets has always annoyed me - so often the man just stands in the aisle with the trolley, looking bored or bewildered and getting in the way. If a woman can't drive, and he has to be there as chauffeur, then I wish he would just stay in the car (or cafe if there is one) and read the paper or something. I am not being anti-male or sexist; if a man does the shopping by himself, that's fine, and many do (and they don't seem to need a spare person to push the trolley). I just don't like the useless man hanging around blocking the aisles while his wife does the actual shopping. "For better, for worse, but not for Sainsburys" was our agreement.
Even worse is the couple in which one party takes the trolley to tbe queue while the other continues to bring items to add to the trolley. No, not fair! The queue is for people who have finished shopping!
But one of the saddest things for me after OH died was arriving home from the supermarket with no one there to greet me at the front door, help me carry in and unpack the shopping, and snuffle around in the bags to see what treats I might have bought. Funny, the things you miss.