I was brought up to make sure that the "bloody-looking juices from a chicken" meant it was not cooked properly. I know you can eat "pinK pork, too. I don't. I like my pork well done. Lamb, on the other hand, I eat medium rare, sometimes. Usually my wife dictates that the lamb be at least medium, which is fine with me also.
Steaks are a different matter altogether.
Art