I had a beard just this last week, I got bored. I have stubble now, which ironically was shaved off yesterday. I grow facial hair easily and whilst short it looks good on me I kinda get the "Dane Cook" look especially since my hair is pretty similar and so is my clothing taste...gawd I'm a younger more english Dane Cook...sweet he got to pull Jessica Alba if only acting...and Ashlee Simpson...I like my odds ;)
I can grow a full goatee and tache in about a week if I let it all go then shave it in I have it, by 2 weeks the beard is looking pretty damn full by 3 I'll be having to trim the hairs. Therefore I can never truly be bothered to keep facial hair since I KNOW I can re-grow it in a week. I'm never like "Oh my beard! I can't shave it off! It took forever to grow!" it takes 7 days for me to have a beard. My hair also grows pretty evenly so bald patches/rough patches ect aint a problem either.
I shave essentially whenever I can be bothered usually 2 - 3 times a week, depends what I'm doing. 1 shave a week leaves my wilkinson sword quattro blade blunt, point blank blunt, shaving off a goatee even with major trimming down to stubble length also kills a blade. I tend to shave 2 - 3 times a week to make the smooth look or just "stubbled" look last and to preserve blades.