This can have a huge impact on your social status. Because we live in a world where people are always compared and judged. Business lunch/dinner or formal meetings are not for filling your stomach. Not only that, eating skills say a lot about a person. And good manners show respect to others. And you should eat in a non-offensive fashion. Table manners aren't just about how to hold a knife or fork. Creates a favourable impression in both lunch/dinner and social business situations. This will help you come across as a polished professional.