Earlier quoted context omitted.
I find online grocery shopping shines for heavy and bulky things that are a huge pain to schlep home otherwise, especially stuff that lasts a while. All juices/waters/beers/wines, paper towels, lots of oranges/grapefruits, cleaning products like bleach/detergent, etc. When they carry them up to your fourth-floor door it's just so much easier. The smallish shops are good for stuff you can then easily carry in a bag by…
If you are getting those things anyway, and only need small portions of the other, then why bother?
For instance, I called in to the patisserie this morning on a whim to treat myself to a pain au chocolat for breakfast. And I think I fancy cheese for dinner, so after work I'll nip out to the deli for some stilton and the greengrocer for walnuts and figs to go with it. I've already got fancy crackers and some good port from my last online delivery so that's everything I need for dinner.
I'm used to being able to pick stuff up according to what I feel like eating on the day. Yeah, it wouldn't be a huge quality of life reduction to have to plan meals in advance but why bother if I don't have to?
Plus, when I'm working from home, it keeps me from being entirely sedentary on a miserable, drizzly winter's day when I might not otherwise have bothered leaving the house, so it has physical & mental health benefits too.