insanityOO7, "Grooming is different" is just because we used to it, by the hystory of centuries... one day plastic surgery (or any other way of imroving your appearance) will be considered as simple and common procedure as styling your hair, or putting a make-up.
..as for "a person's worth is linked not to what he is and what contributes to the society as a whole but to his looks", - yes! that's what we are talking about. Some people's appearance is their money-maker, or you can say, their contribution to the society, you cannot deny it. Simple.
In Thailand thousands of males change their entire gender , just for making money! So why fixing your nose, or filling in your lips, or sucking out your excess fat is a "sin"?