"But it is very rare for the wet wear to totally fail and you arrive home and the cupboard is totally empty - even having arrived home after several weeks abroad. But in these circumstances there are local shops, restaurants, fast food outlets, the neighbours and if it really is the wee small hours then going without food for a couple hours before places open for breakfast isn't really a hardship."
Local shops are closed down; lost out to the big box, which is too far away (no car and the transit doesn't run at night).
Restaurants not always open and all too expensive. Shoestring budget.
Same for C-Stores and fast food outlets.
Neighbours are hostile.
And going without may not be an option if one has a medical condition. Thyroid problems, diabetes, and so on require strict diet management or you could faint and otherwise present a medical emergency.