I am, I'm absolutely convinced I won't get food poisoning. I may even eat it tomorrow because I'm tempted to have a curry instead.
Back in the 70s and 80s the British housewives wanted pinky red beef as it was(or seemed to be) more aesthetically pleasing to the eye. Was easy for butchers to provide because it meant meat wasn't hung, or hardly hung for long.
Nowadays, you see 'aged 28 days' (or so) on a pack in big bold letters! Beef should be hung until it turns a dark red bordering purple because aged(hung) beef will be more tender due to the natural enzymes breaking down the fibre of the meat.