3. The side note. The kinky aspect is — in many ways — a side note.
Coming from the BDSM community, I can safely say that what Ana and Christian play with is S&M light. Now, there's nothing wrong with that. It gives just enough "kinky fuckery" to be titillating but not intimidating.
Spanking and light bondage are also common fantasies. For women, the feeling of 'giving up control' can mentally release them from the double-sided message females receive about sex. To 'want' sex is considered slutty (by some), so this arrangement skips right over the guilt-inducing desire to be a sexual being. 4 Tips To Improve Your Sex Life
4. The easy read. There has been a lot said about how the book was written. But the bottom line is, it's a very easy read.
The "Fifty Shades" trilogy exploded over this summer, which makes perfect sense. It's a light, yet stimulating, story. It’s not overly-intellectual and has a more relaxed way of telling the tale of redemption and love conquering all, which is a narrative that has been used by authors for a very long time.
These are just a few of my thoughts about why the books have been so popular. What do you think?