Getting a nose job worth it for any person with breathing problem who wants clearer breathing, or anyone who desires some changes to his/her nasal appearance, or both.
Form refers to the shape of the nose, while function refers to the nose breathing properly. Rhinoplasty can alter both form and function, and that is why it is a double edged sword that requires a good understanding of both. Otherwise, the form can get compromised while treating the function; or vice versa.
Yes, you can. Choose the best rhinoplasty surgeon with a good understanding of both for best results.