I just shaved my beard into a mustache. I liked it a lot. The only negative is, you have to have a lot of confidence if you want to wear one because a bushy man beard can be intimidating to ladies and other guys who can't grow big ol beards. Another negative is when you blow your nose sometimes the snot gets in your stache. Other than that there is no downsides to a beard. They make you look older, they make you look way fucking cooler, and you can go up to guys who can't grow them and ask them whats wrong with them and why they aren't as manly as you... Also being one of the smallest guys in my group of friends it's incredibly hilarious that I can grow the most full and fantastic beard.
My mustache/ sideburn combo right now is a nice change of pace however.