Reasons for nose revision surgery

If you look at the past, there are people who have gone beyond repeat exams and have even taken the exam again and again. I am cautious, but may I ask why they are repeating the exam? Other people also say that you should always think twice about getting a nose surgery... So, I want to know the reason, so it's okay to just write down the number.
 
1. Contracture or bowing of the bridge of the nose (due to silicone or donor ribs)
 2. Sagging of the tip of the nose, bending of the columella, or nostril Uneven (due to ear cartilage or nasal septum)
 3. Inflammation
 4. No improvement in the shape of the nose (only the height increases)
 5. I do not like the shape (it becomes different from Chugumi)
 6. Because of changes in fashion (beoseonko -> direct, natural - >Sleep)
 
Also, if there are people who live for more than 5 years without retaking the test, I would like to ask if it is because there are no side effects at all, or if they just live with it even if there are side effects such as a saggy nose tip because they have no
 intention of retaking the test...
My eyes are wide open too, but I have no intention of trying again, so I am just living.