I go once a week but I'll have my hubby pick up a few things once a week on his way home from work too. I have pregnancy brain right now so I'll start dinner and realize I don't have all the ingredients. Lol.
I go almost every day. I typically just buy what I need for the day. I started doing this when I was recovering from my eating disorder and it was too stressful for me to keep a lot of food in my house. Now it has just become a habit.
We go every two weeks. A lot of our food we keep frozen so we don't need to buy those quite as often. Some things we buy in bulk from Costco or BJs(Generally milk and canned goods). There are times where we run out of something we usually have on hand(Spices, oils, so on.) and we'll go for a quick run. Sometimes we end up low on diapers for the little man without noticing, those are also things we run out quick to get.
When I was expecting there were rather often visits to the 7-Eleven down the street for strawberry shortcake ice cream bars. ;]
My Man goes every day. Often two or three times a day. He rushes and forgets things and goes back.
I've tried to sit down with him so he'll realize that a budget and a LIST buying what we need from Aldi, Jewel, and the Butcher Shop ONCE a week would save us money, instead of running out for a few items every time he feels like it.
It drives me crazy. Often, I don't have anything to make a full dinner in the house with, and have to wait until he comes home with something. Sometimes I go, but my cash is limited until I get more hours at work, so it's difficult.
Well, when I was making way more money, I went once a week at least unless I had another meal in mind. At least for little things I needed in between. Otherwise I went every two weeks after I got paid.
Right now... it's just kind of... a little here and there. My roommate buys a lot of groceries once a month though.