If someone offered to erase your memories of the spoilers, the reveals, the twists, etc. Would you do it so you could watch them all again for the first time? Experience the reveal of Ghostface, Norman Bates, Pamela Voorhees, Brahms, Esther, Jigsaw, Malcolm Crowe, etc. for the first time and get to relive the experience of figuring it all out.
I would do this in a heartbeat. I never really got the chance to truly have a "first experience" with many of these movies, either because I was too young when I saw them (I was 2 when I saw Elm Street and like 4 when i saw Scream) or because I had them spoiled due to their age (who didn't know about Norman Bates before seeing Psycho)