On the serious side, just about everybody has some deviation to their septum. The septum is simply the wall that separates the right side of your nose from the left side. Everyone has a little bit of curve. 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.