My wife said she stopped wearing panties at 18yrs old, when she left home for college. She has a few pairs of thongs, because some of her bf's, over the years, liked her to wear them. Other than that, to this day, she never wears panties.
She wears leggings, most of the time and her clearly visible camel toe gets plenty of attention. Smiles from men, stinky eye from women, lol.