First I want to say that I think people with injuries or who are born with a congenital defect and want to change that should totally do that if they want to. This is more about plastic surgery only for "beauty" purposes.
I think every person has the right to do what they want with their body so I think it's a persons own decision if they want to do it or not but if t becomes a normal thing then I see it as a problem.
First of all we have to say that everybody has different preferences so you can never appeal to everyone really. But that doesn't mean you should change anything. Just try and show yourself the way you are in the best light. Don't follow beauty trends that are not possible for you to follow, just be yourself. If you want to look like a celebrity find someone who actually has a similar body to you.
If you are skinny don't try and have a huge ass like people seem to think is great in the U.S. atm and if you have a wider build with curves don't try to look like a runway model. It seems that a lot of people want what they can't have instead of trying to focus on what they do have. The same goes for the face.
I always thought Renee Zellweger looked cute with her big cheeks, they were her trademark pretty much but who is that ? I can't tell.
Park Bom a singer from my favorite Kpop group 2NE1 has had several surgeries and completely destroyed what was once a beautiful face.
But I don't think plastic surgery is only a bad idea if you "go too far."
All of the people who went too far started off thinking they'll only do a little bit. And also I think you can destroy your beauty if you only do one procedure.
Lee Hi who is a very talented singer I will link one of her songs because I like it.
She had a very cute face but she decided to change her nose. In Asia a lot of people think their faces are too flat and they want a more 3 dimensional look.
People even congratulated her on her "upgraded" looks. For me her nose doesn't fit her face at all. She made herself look like a doll, her real face and all the character it had is gone forever. Now she has no real individuality anymore it looks like a face from the factory.
Just because a bunch of people tell you something doesn't mean they're right. Please just think about it a lot if you ever consider this and also think about what you're losing and not just what you hope to gain. There are people who like the way you look even if you don't know it. So make them happy by showing your natural beauty instead of carving it up.
Just a plea from me.