If it's horror or horror related i'll (basically) watch it. I've been a huge horror nerd ever since i was like 7 years old. I remember watching stuff like "Dawn of the Dead" and "Phantasm" with my older brother on his super 8 projector back in the day. Ever since then i'm hooked and i've been watching everything from early 20's German expressionist movies like "Das Kabinett Des Doktor Caligari" to European horror movies and numerous 80's slasher movies.
Unlike most people i'm still stuck in the age of phsyical media. I still buy super 8, 16mm, VHS, blu ray's and 4K discs on a regular basis. The counter should be somewhere around 2500 movies at the moment. I just recently converted my basement into a man cave so i can fit all my movies and movie related stuff in one place.
Don't ask me to name my favorite movie or genre cause there is so much stuff i love. Although i do have serious weak spot for the early Universal Horror movies (Frankenstein, Wolfman, Mummy, etc), Hammer horror films and European horror cinema in general (Spanish and Italian movies mainly). If i had to choose an all time favorite it would probably be the Blind Dead movies by Amando De Ossorio or Fulci's Hell trilogy (City of the Living Dead, House by the Cemetery and The Beyond).