Orchos Yosher Chapter 5 (The glory of the face), rav Kanievsky gives a few examples of why it is so important to grow a beard. He also mentions that wearing a wristwatch could be the reason a man has problems or suffering.
-Should I take of my watch and sell it?
-Why exactly is this the cause of problems and suffering?
-Why do so many religious Jews wear wristwatches?
-Is this the reason why you do not wear a wristwatch?