There isn't any point to it
Plus, I quite like 24 hour shops. I'm not getting into an argument with you about it though.
( Pickle Fairy is clumsily dancing away this fear, Sun 24 May 2009, 18:19, archived)

It's not an argument, you're entitled to your opinion.
But you're thinking too much about the convenience of having 24/7 supermarkets. The reason it was introduced is so that there's a period of time where the only shops that are open are the smaller ones. This is so they don't go bust.
( Master Of Turnips. Only gays and morons believe in ghosts., Sun 24 May 2009, 18:21, archived)