I love my beard. Since I suffer from having acne and a babyface, the beard helps me look more appropriate for my age. Plus, it just makes me feel good about myself. So I do not shave often, especially since I want to keep the hair soft for as long as possible (although it will eventually become harder with age).
Having said that, an overgrown beard does not look good (in my case, anyway) and even people who like having beards need to shave it in order for it to grow further. For that reason, I have it removed about once a month. I say "removed" beacuse I do not actually shave it off most of the time, but have my father remove it while he is cutting my hair. But if my beard is too big and my hair is still fine, then I do not mind picking up a razor and shaving it off.
EDIT: Also, for those who want to grow a beard. While it is indeed good to shave it often in order to promote growth, it is not good to shave it too often as that makes facial hair very brittle. So do not shave every single day or anything like that.