What are the reasons for protecting privileged communications?

So you don't get heard by the wrong people.

Certain types of communication have been classified as privileged or protected from disclosure to encourage the free exchange of information between the speakers.  We want to encourage clients to disclose all information to attorneys, no matter how embarrassing, so the attorney may properly evaluate the situation and give the best advice.  If clients fear that unfavorable information will be communicated to others, that their reputations will be affected, they will be less inclined to reveal the good and the bad about their situation.

Perfection I really appreciate you taking the time to answer this.