OK ladies, this makes me laugh.
My mustache is a trademark, my "beard" for my male outward persona, that I have had since 18 (now 53) as part of my pretending to be alpha male all these years. Shaved once, at 40 for a Halloween party where I was Cat woman, my spouse, Bat Man (but that is another story). It is a true recognizing feature that I know would throw people of if I didn't have it (people freaked the one time I did it, and really didn't recognize me).
I will keep it until the day I decide to transition.
As for Movember, no one, and I mean no one, should be obligated in any way to participate, even if just in a mocking, peer pressure kind of way. It is a personal choice, no different than shaving your head for St. Baldrick's Day.