Out of curiosity do you feel the same way about Alien? Because both movies obviously use sci-fi elements (space and an alien vs robots and time travel) but the plot arcs for both are 100% horror. Frankly outside slasher flicks a LOT of horror has either SF or fantasy elements because things we don't understand are the scariest.
It’s the strangest thing. I don’t. I don’t like horror and I could never get into alien. I think the plot/story in terminator is just so compelling and horror doesn’t seem to be used just for scares but furthers the story.
I'm not a huge fan of horror either as things like jump scares annoy me. But man, the unrelenting nature of Arnold in that movie leaves you on the edge of your seat.