Actual Reponses May Vary (and why)

I saw a trend today on the interwebs - "Name a book everyone should read and why".

The responses on one page I saw were all great books - and by "great" I mean literary classics or more recent political powerhouses.  The History of the World, The Fountainhead, Man's Search for Meaning, etc.

My instincts (and I'm sure many internet denizens) were tested: Does one answer with a cultured, thoughtful and refined selection, or just go with favorites, judgment be damned?  

What a hilarious inner monologue: 

Hmm, yes, while I find Rand's work to be of particular import during these troubled times, I'm more inclined to suggest something like Voltaire's Candide or To Kill a Mockingbird.  
Really?  Those are your suggestions?  Sure, they are fine, but they are no Chronicles of Narnia.  
Lewis was a talented author, yes, but the true depth of British culture is better evoked in Sense and Sensibility.  
Bah.  Too dull.  How about Napalm and Silly Putty?  It's hilarious.  
I really don't think you understand the task: a book others should read - that it holds wisdom and is a true window to the souls of man!  Not a book one would want to read!
Screw that.  I'm suggesting Harry Potter.  It rules.