With a folding rolling cart or a bike with good panniers one could easily do all of that for the family of four with minimum hassle with one or two shopping trips a week, plus irregular trips to stock up on bulk stuff like toilet paper.

I think part of the disconnect here, though, is that you're associating this process with extra mental overhead, but when there's no extra effort needed to just get stuff you don't need to think about it as much. Forget to get butter? Oh well, you can literally just get it the next day on your way back from the park or the movie theater—or if you really need it right now, you can get it at corner store just a few blocks away at a slightly higher price.