Men with beards have always been a symbol of masculinity. Now beards have become a trend. In the recent years beards have become “hip” and “cool.” Picture a typical hipster dude. He's probably wearing pants that are rolled up just above his ankles, a flannel, thick glasses and... a well groomed beard!
That's it! The reason beards have started to become attractive is because men take care of them. An out of control beard is not attractive.
Exhibit A: Out of Control Beard
Exhibit B: Well groomed beard
Verdict: Hot. Beards can be hot as long as they are well taken care of. You can be the hottest man in the world (i.e. Brad Pitt), but if you have an out of control beard I am instantly turned off.