Like most other commenters, I don’t think I’d ever buy my groceries online. It can be a pain to go to the store once or twice a week, but picking out produce is so important to avoid the bruised or old ones, and to pick things at just the right ripeness.
I buy most of my clothes second hand and I think that’s best to do in person because sizes can be misleading and you gotta watch for how worn items are.
We bought cat food online for the first time this year during a big sale, and I may never go back to buying that in a store. We buy pretty much all our electronics online too.