(Concern) Cosmetic orthodontics

Orthodontic treatment is usually done a lot at a young age.

However, I wonder if it's too late to undergo orthodontic treatment after getting older.

There is no problem eating food even without any correction.

I'm planning to get orthodontic treatment for cosmetic purposes, but everyone says it is painful.

Is it true that it's better not to undergo orthodontic treatment unless necessary?

Is it better not to do orthodontic treatment for cosmetic purposes?