I very rarely have this - in fact I cannot remember the last time I had it....much as I love eggs, I feel guilty eating this and one egg on toast would be nowhere near enough for me for dinner anyway.
I would probably make something else or add potato (fried) to it if I was having it for dinner, but I know several people who live alone, who sometimes cant be bothered cooking, and just have an egg on toast.
To me that is breakfast, and not dinner...