Keep in mind InfraBlue, that the movie was based off the novel by Margaret Mitchell.
It was one of the first adult novels I read as a child. The movie is very good, but the book is much richer.
In the book, Scarlett married 3 times and had a child with each husband for instance.
Mitchell didn't write the book for social commentary. She was stuck in bed with an injured ankle, and was bored. She got into it over time, as it took her 3 years to write the over 1000 page book.
She didn't even tell her friends she had written it.
BTW, Mitchell was apparantly really into porn, FWIW.