I will start with the second part of the question first. No I have never had any cosmetic surgery in my life.
I don't think I would ever have any plastic surgery to stop aging or for cosmetic. The aging process is part of life and each of our beauty. If you take care of yourself as you are growing, you wont need any kind of surgery.
Any kind of unnecessary surgery is not for me. I hate surgeries and try not to add them to my life list.
If it was medically necessary is the only way I would have any of that done. I'm not against anyone that does, it's just not for me!