I think more horsey people annoy me than non-horsey people, come to think of it. Hmm.. Actually about even.
The people who own horses just to own a horse, but do nothing with. Then they lecture you on how to care for your horse.... Uh, excuse me? When was the last time you saw your horse? Do ya even know its name? Just because you read in a book that horses wear shoes doesn't mean mine has to. And yes, my horses stand in the rain. If they didn't want to be in the rain, they would go in their shelter. I don't have to save them from the big, bad rain.
OR ... The folks who own horses but are terrified of touching them or riding them outside a pen. I have a friend, love her to death, but she is convinced her horse is evil incarnate and it took me a long, long time to convince her to let her horse do anything more than walk. (She's not a bad mare, just inexperienced... Because, well, she needs experience!)
When someone (you don't know, never met) comes around and let's their kids grab tails, go under, hang off neck, wrap around hooves like little spider monkeys, etc.
Or when they just suggest that their kids should ride the horsey. ??????
Or, when people just start asking to ride the horse. "I rode a horse when I was 12, so lemme get on there and see what this fella (side note, I have a mare) can do!
When you are working an unruly 2 year old who is flipping out and a naysayer starts running up to you, screaming "You're hurting him!" ( FYI, this particular horse had some severe issues, and all I was doing at that time was was trying to get him to go left. Not really knowing anything, he was going anywhere but- and no, I wasn't beating him, he was freaking himself out. I was merely patiently waiting for him to get his brain back... When the girl yelling got too close- he was a dangerous guy- I did swat her real quick and told her less politely than I could to go away before he inadvertently killed her).
.... I think people in general annoy me :/