The main benefit of episiotomy is to facilitate the delivery of the baby, especially if there is a risk of tearing or signs of fetal distress.
However, this incision sometimes has many more drawbacks than advantages, so it should not be made in a generalized manner. In particular, episiotomy can cause a lot of pain when defecating or having sex if it does not heal properly. It can also cause bleeding, urinary and/or fecal incontinence, etc.