A very good question. I guess we are so used to watching what we say we find it difficult to stop when we have an opportunity. Not sure I'd like total d-restriction picture one of those loooonnnng stories full of four letters and other explicit words. I'm okay with occasional **** or ****. Why not. From now on watch my posts.
With freedom comes responsibility, and with freedom of speech come the responsibility of tact ;-)
It's okay to speak freely and still keep it clean. I don't like to swear unless it's out of humor or pain. It sounds trashy.