If you have trouble breathing out of one side or another and you find it bothersome, then surgery may be of value. But for the most part, this is an elective operation, and you have to balance the risks of the operation with the benefits. All surgery has risks. You are doing something when you cut which is irreversible. Most surgeons measure twice and cut once.
Septal surgery is pretty straightforward.
The complications are very uncommon, but it still is surgery. It still involves a recovery period and like any operation, it takes a little while before healing is complete and you see the benefit of the operation. Imagine walking into a doctor's office, having a minor procedure done on your nose where a tiny piece of cartilage is removed just like visiting the dentist. The cartilage is sent to a laboratory where it is grown and attached to a special biocompatible meshwork. A few months or weeks later, you have an operation where an implant composed of your own tissue is then inserted into your face to augment the bridge of your nose for example, or to correct existing defects.