Why do women love 50 Shades of Grey so much?

My theory is because A rich handsome billionaire falls in love with a woman who is described as an unremarkable plain Jane. Average, but he falls for HER, despite that, despite her flaws.

This is what women want, to be loved unconditionally by someone they want. To be innately special.

Which is why many women get offended when asked what they bring to the table.
Why do women love 50 Shades of Grey so much?
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