Not every corset throughout history was sexy or glamorous. I suppose it is all a matter of taste. Although many corsets were confining and uncomfortable, there is nevertheless, an air of femininity surrounding these garments. The dictionary defines "corset" as: a woman's close-fitting boned supporting undergarment that is often hooked and laced and that extends from above or beneath the bust or from the waist to below the hips and has garters attached.
As we all know, there are many styles of corsets and they exist for varied reasons. Some might truly be worn for support under garments, but I'd venture to guess that most are acquired as an item to be worn on its own and in the budoir. What other garment in history has assumed such social and sexual significance?
What is it about this undergarment, which was designed to enhance the female figure, that has made it an icon? Was wearing corsets primarily about sexual empowerment or restrictive chastisement? Could wearing a corset explain common female maladies of the Victorian era, from fainting bouts to miscarriage? How great was the suffering, for how small a waist? One legend claims that Katerina de' Medici, Queen of France in the late 16th century, required her ladies-in-waiting to have 13 inch waists. While this might very well be a legend, one must take into consideration that women were smaller then. (Talk about suffering pain for beauty.)
At some point, the "Goth" style corset took on the interpretation of being black and at times made of leather. In my opinion, these corsets do not represent a true Gothic style. In my travels through cyberspace, I have not come across an authentic gothic corset that was made of leather...and especially not of vinyl. These appear to reflect an S&M culture and not a "Goth" culture.
Victoria's Past website has a brief but comprehensive history of these unmentionables.