We aren't police officers, we are guards. Let us have facial hair that's neatly kept. We have hair on our heads that we keep neatly kept and if it was not kept, you would handle it accordingly, so let us have neatly kept beards.
Why is this important?
Because it's self expression and it makes you feel confident and better about yourself. If you want people working for you to do a good job, then make them happy.