Hello,Stephan.
Well-groomed and well-trimmed beard and mustache give a men respectability. I did not read all the comments, so I can repeat what others have written, but the fashion for beards and mustaches changed in different centuries, as well as the fashion for women's hairstyles. There are certain styles and the shape of a beard, by which can be said a lot about a person.
Some women like the beard, others - no, for different reasons. But if a woman has thin, sensitive skin, then kisses and caresses of beards can cause skin irritation. Therefore, if you like kisses, your beard and mustache should be soft, and here you get a bonus in front of smooth-shaved mens.