Some people like myself just find it fun. When I was a kid I hated horror movies and found myself in the same position as you. But over time the movies just got less and less scary to me. Obviously movies like conjuring and sinister still get me, but slashers are just dumb gory campy fun. It’s definitely not for everyone, and it’s kinda like spicy foods in a way. It seems like something nobody would ever want, because it directly hurts your taste buds. But some people just love the feeling.