If you're single and you're happy, read this book! 

It's so refreshing to come across a body of work that validates your lived experience and philosophy in life. The author is an expert researcher on the topic as well as a "single at heart" herself and brings a lot of insight into the data that is coming out at a faster and faster rate. People who enjoy being single are much happier, more altruistic, and do more for their communities than couples and unhappily single people (those seeking a partner). The data throws all the stereotypes and misconceptions about single people out the window.

I had a good chuckle at the quiz in chapter 1: I'm the definition of single at heart.