The customer may always be right, but you are not a customer, you are a client. As a client you have come to us because you have no idea what you are talking about. Rarely do you even know what it is you even want. So how can you be right about something you know nothing about. I want you to be happy with the end product; I emotionally need it as it determines how I value myself as a developer. So trust me when I tell you that you are wrong. That is why you are my client. To give you what you never knew you wanted.