We know what they are and what they do, but what is your opinion on the subject?
Are you completely against the use of this and feel it's wrong? Society can be cruel, but would you succumb enough to the negative feedback of your appearance to fix your "flaws"? Many celebrities have had cosmetic surgical procedures done on them (usually mild changes), while others go beyond the limit for personal perfection.
Let's say you finally become a parent, your baby is now born but you realize it is now the victim of facial deformity. Would you opt for cosmetic surgery so the child does not have to suffer a life of inevitable insults and criticism? While facial reconstruction and body modifications can offer improvements, it also has risks.. some, even life threatening (such as death from a poorly done liposuction or body lift).