Oral exams are better than written exams

There are many opinions about the imposition of oral exams instead of written exams. Is it better for the education doing oral exams? Or do they have just disadvantages for students?

On the one hand, although students feel under pressure in oral exams, they help to lose the fear to talk in public and they prepare them for the future better than written exams, which give students more time to think and answer  questions appropriately .

On the other hand, not being accustomed to oral exams, students can get more nervous and they  forget the correct answer to the questions or do not complete them properly.

In my opinion, I think the education should make more oral exams because these prepare students to have more mental agility.