Manners are important for a very simple reason. When you use manners, you don’t look like a beast sitting at the dinner table or in public. No one wants to watch you act like a fool or slop your food all over yourself while eating with you. Have some decency and use the manners you were taught when you were growing up. If you choose not to use manners, people that associate with you will more than likely be uncomfortable taking you anywhere in public.