Has there been causes of circumcision or circumcision-related issues that traumatized patients?

No, but ...: No, but it's very important for a patient to understand what he is going to accomplish and make a difference to his life & penile well-being, and realistically accept the consequence - rare complications such as short-term pain and infection, etc. So doing will make a patient be responsible to cope with whatever the conditions can be after circumcision, resulting in better satisfaction. Real life!