Needed?

I know it's random, but I sit in a coffee shop and up on the shelf is The Dictionary of Synonyms.  At first I thought "Why not call it a Thesaurus."  The I realized that a thesaurus is a compilation of synonyms and antonyms. 

So now my issue isn't the mis-labeling of the book, but instead the apparent lack of need of it.  Why would anyone choose a compilation of synonyms over a thesaurus that supplies both synonyms and antonyms?  Hopefully, The Dictionary of Synonyms is way cheaper than a thesaurus, or perhaps came with a companion volume of antonyms.

Comments

[Angelo]

Michael Vick is a hero. I hate dogs, and what better way to support the destruction of the little menacing creatures than to exploit them through entertainment or eat them. Shit, fight them, the meat is more tender that way. I have to say that drowning was wrong, I mean he's rich. Are you telling me that he couldn't afford a bat?

[L]

Ah. It is telling that you replied to the wrong post in your praise of Michael Vick.