Yea the cons are that you cant hear other riders or the area around you.
Of course I ride with headphones cause it allows me to focus. Though I usually ride alone if I was with friends riding I might not need the music to keep me focused. I've rode with and w/o music alone and I lose my focus w/o music which causes me to hurt myself more from stupid mistakes. If you pay attention to the area around you you should be fine.
I tend to listen to more punk rock when I board.