Classics of the horror movie genre were filmed thru the 1950's to the mid 1980's. The teen genre, though no stranger to horror movies, is believed to have caused the demise of "true" horror movies in the 1990's. Typical teen movies now often mix with the horror genre, causing genuine horror movies to often be thought of as a thing of the past.
Examples include the following; various nightmares related to the movie, the unwelcoming of that dark room at the end of the hall, the impression that there is a character from the movie in one's closet/bathroom/shower or other enclosed spaces in or near the bedroom, and other similar experiences.
"Fuck no, not after the last time when I almost shit myself when I got home."
"Aw man, I romanced with this girl last night and it looked like a scene from a horror movie because she had her period"
Girl: No, not tonight I'm bleeding from my vajay-jay
Boy: That's cool we can play horror movies
"unless you like horror movies you don't want to go down there tonight"