A. D. Miller in More Intelligent Life:
Like many of America’s traditions, especially in the South, the porch is at once derivative and indigenous, a synthesis of multifarious influences into an American original. Some architectural historians think the concept was imported with and by west-African slaves. But other iterations of the same idea – a shaded outdoor space beside a too-stuffy house – have also been implicated: Italian loggias, Greco-Roman porticos, English colonnades, early colonial architecture in the Caribbean. Spain and France contributed latticed ironwork and other refinements; later came Gothic arches and the turrets and gables of high Victoriana. In the mid-19th century they were incorporated by housebuilders across the country, but in the South they were older and ubiquitous. They have never been quite as innocent as I wanted them to be. Hybrid in origin, in its history and associations the porch is paradoxical. To begin with, it is at once public and reclusive. Like a negligée, it seems alluringly to lay bare a home, a family, its secrets, but also withholds them, the life that is out of sight somehow more opaque by being half-revealed – especially when, as many of the best porches do, it wraps around a house’s façade to make a zone of shady, unseen repose. And, while the neighbours might be able to see what you are doing on the porch, and with whom, your parents inside cannot.
Unsurprisingly, this has always been a place for courtship and assignations, in life and in art. “Sittin’ on the front porch on a summer afternoon,” Dolly Parton sings in “My Tennessee Mountain Home”; “And when the folks ain’t lookin’, you might steal a kiss or two.” Many of the romantic crises in “Gone with the Wind” occur on the porch. We meet Scarlett O’Hara, with her 17-inch waist, being courted by twins on Tara’s. From it she fatefully watches Ashley Wilkes riding up to the plantation and falls in love with him. Rhett Butler first propositions her on a porch in Atlanta, just before Scarlett sees the city burn.