Do I really need braces? Are there cases where it's okay not to get them?

My teeth aren't perfectly straight, so I'm considering getting braces, but I'm not sure if I really need to. 😥

It doesn't look too serious on the surface, but I'm hesitant about whether it's right to do it now in case it causes problems later.

Orthodontics takes a long time and is expensive, so it is not an easy decision.

I am also curious if it affects functional issues (chewing, jaw joint, etc.) rather than just for cosmetic purposes.

I would like to know if there are separate criteria for when it is absolutely necessary and when it is not.

I'm also curious about the satisfaction levels and changes for those who got braces after having similar concerns. Please share your honest opinions.