Why the DU vulgarity?

I acknowledge that I'm a relative newbe here at DU. And I acknowledge that many people at DU are very passionate about certain topics. Furthermore, I acknowledge that most DU posts are not vulgar.

But I just don't understand the vulgarity, when it is used here. What is the difference between "Bush was wrong" and "F*cking Bush was wrong"? The first is a statement that invites a civil conversation. The second is more like a childish playground taunt.

I'm a progressive because progressiveness is, to me, a world-view that tries to see the best in people. To me, progressiveness is a humane and compassionate way of looking at things. Vulgarity just doesn't seem to fit into all that.

Edit:

As I mentioned in post #24, I'm going to listen to some Joan Baez now. So I won't be responding to posts here. I hope I've added some food for thought. I'm not advocating censorship, just rational self-control. Because I, for one, have never been swayed by arguments that are full of vulgarity. But maybe that's just me. Now it's time for some Joanie.