I'd say fantasy/sci-fi, horror, and romance for different reasons.
I usually say Harry Potter was the start of my love for fantasy, but I think I had an interest in it before that and the series just ascertained it. I find the ability to create and experience entire worlds that abandon everything you know is fascinating. Also, power/magic systems. Love them.
Horror is something I definitely grew into. I was the one who would always hide beneath a blanket while watching a horror movie and one time I even spent the duration of a scene inside a bathroom because I refused to be in the same room as that screen. Now, I think I've developed an odd dark fascination, even though I still get afraid and paranoid rather easily. I've also learned to appreciate how good horror can make you deeply unsettled from a storyteller/creator's perspective.
Romance is the least "oh my gosh I love art and stories I adore you yaya" of the three. I just like gushing over wholesome moments.