Because Peck speaks so deeply of the needs and longings that cut to the very fundamental elements of human nature, a post-millennial reader can still find Peck's "new" insights relevant and even revolutionary.
So many of the truths found here along The Road Less Travelled are timelessly true. For instance, how "timely" would be a new worldwide appreciation of Peck's definition of love, which is "the will to extend one's self for the purpose of nurturing one's own or another's spiritual growth."
The pages that follow that definition, along with his explanation of how "falling in love is invariably temporary" are in themselves worth the purchase of the book.
What kind of reader will not like this book?
My answer would be, one who needs to think simplistically, and is in denial of the paradox that makes up nearly every moment of normal adult life. This reader needs a formula, tends to think one-dimensionally... perhaps when he or she reads the opening sentence "Life is difficult" this type of person will think "Really? I had no idea!"
What kind of reader will like this book?
One that knows his or her present day problems may require a little extra help and advice. Something beyond their own haphazard intuition and good intentions. Someone who is willing to be attentive, to learn, to think multidimensionally. Someone that will respond to the opening sentence "Life is difficult" with something like "No kidding! Tell me about it!"
The Road Less Travelled will not disappoint this second type of reader.
I've read it twice, and will read it again. And I've also read its sequels, Further Along The Road Less Travelled  and The Road Less Travelled & Beyond .
For more on how much I love the works of M. Scott Peck, click HERE.