Plastic surgery is a medical specialty that uses a number of surgical and nonsurgical techniques to change the appearance and function of a person's body. Plastic surgery procedures include both cosmetic enhancements as well as functionally reconstructive operations. In the former case, where aesthetics are considered more important than functionality, plastic surgery is also referred to as cosmetic surgery. Most procedures involve both aesthetic and functional elements.

The word "plastic" derives from the Greek plastikos meaning to mold or to shape; its use here is not connected with the synthetic polymer material known as plastic. Plastic surgeons typically mold and reshape the following tissues of the body: bone, cartilage, muscle, fat, and skin.

Source: Wikipedia

*Do note that there's a difference between plastic surgery and cosmetic surgery.
So what are your opinions on it?

A have little opinion about it - just one way to recorver some self-esteem by throwing out lot's of money.

Unless we are talking about burn victims or any other people who were somehow damaged.

I assume the argument has something to do with "god's" or "nature's" design versus what we can do to change it. Personally, I say there's nothing wrong with plastic surgery. It should be your choices that make you who you are, if you choose to get a nosejob or whatever then by all means.

I actually do not care. If people want it they can do it. Its not of my concern as to what they do with their appearance.