Yes agreed, despite my initial enthusiasm, home delivery does not look anything like as good as I hoped.
One other aspect that concerns me is Tesco in-store last week, on a weekday morning, was nearly as busy as a Christmas eve. When you ask yourself who these people might be, it seems more than possible that they include some who might be feeling a tiny bit icky, preparing to lie low for a week or two... so maybe worth persevering with deliveries as long as possible.
Only positive comment was that all these crowds in Tesco were being courteous, polite and friendly. Everybody sharing a joke and a smile at every opportunity. No signs yet, that the population are about to start eating one another.