First of all, any kind of cosmetic surgery on your body comes with certain risks. Good that you don't want it, but there are several who do. The reason? Is not always insecurity. There are certain professions that demand women with firm and enhanced upper frontal. It's not always pornographic career, but if you have a look at that of female wrestlers, majority of them have implants. WWE or TNA, they just want to make money based on their corporate standards, not based on what's good and what bad. I know it's a debatable topic and different people would have different opinion on it, but it is what it is. Wrestling business has nothing to do with performance, as most of it is scripted, but to do with glamor.
Today's society is driven by corporate standards, so what they command, workforce follows. General public plays a part of the spectator and after viewing the same thing over and over again, they think may that's the way human bodies should look. Women at work, college etc when they think they are not getting as much attention as a well endowed woman gets from men, there's where they start thinking about it. I'm not in favor of them, because I have seen a few close and personal, and the scars and incorrect procedures make them look really awkward, but it's a person's body, so I have no say. I just hope they go for good surgeons who'd get it nicely done rather than make them look as if they were fixed in some garage.