I think everyone on this forum would find it fascinating reading. Here's my review from Amazon:

“Cheap Sex” is a clear-eyed assessment of sexual activity, mating and bonding in US culture. Well written, well edited and well grounded in both quantitative and qualitative research, this book expertly and compassionately lays out the less obvious (and largely unintended) effects of reproductive freedom and technologically enhanced “cheap sex.” A recurring theme in the book is that more and hotter orgasms with more partners are paradoxically associated with increasing loneliness across the population.

“People have sex like rabbits. Karezza is more like having sex like a tortoise.”

Whether it’s a quickie in the closet while the kids sleep, a brief bang in the bathroom in between teeth-brushing and face-washing, or a three-minute romp in the sack before the snoring strikes, you're probably good at “efficient” sex.