Individual horses can have wonderful personalities. Once I got over how unsettling I find their physical size, I really got to enjoy their character. The ones that like people tend to be very curious and friendly.
Plenty of them don't like people, though. (And many for good reason.)
I used to live on a horse ranch, and honestly, it made me dislike horses in general. There were a few that were
enjoyable to be around (the draft horses, despite being the biggest, were genuinely friendly), but the bulk were just plain jerks.
What really surprised me was how friendly and fun the donkeys were. The one that did coyote patrol for the emus always made hilarious happy-donkey sounds whenever he saw me walk the fence line, and it was nice to be able to work in his paddock and have a buddy to hang out with instead of a sneak horse-nip while you're focused on something else.
Plenty of them don't like people, though. (And many for good reason.)