@HikeForward
I haven't called anyone thick, and the poster you refer to, well yes seeing as they came on with the 'posh owners ticking people off' attitude, didn't ask any questions, just got stuck in with the stereotype and then didn't like it when it was passed back to them. And basically blamed horse owners.
As for why they continue to do it, well here's a couple of responses to me that I've had from people who I've asked not to feed the horses in the field, I have approached with along the lines of "Please don't feed the horses that, it could potentially cause them to become ill or start fighting with each other" -
"Fuck off you posh cunt, who do you think you are"
"It's a carrot! Horses eat carrots"
"But she likes them!" (That one was to a bag of chips!)
"But they like feeding the horses and I know the owner and they said peanuts are fine" (as mine was the only horse in the field at that moment in time, and the one being fed, they most certainly didn't know me and I hadn't said anything was fine)
"Well where else am I meant to put my grass cuttings? And horses eat grass anyway so you're wrong"
And from the dad caught sitting his toddler on an unbroken, huge sports horse, to the owner of the farm -
"She wants to ride the pony and it's not doing any harm, we just want a picture for her gran, mind your own business!"
(That one truly chilled me to the bone. That horse had never been sat on, it was over 16hh at the time and had a toddler sat on it, not being held, and with no hat on. All credit to the horse, she didn't move a muscle, yard owner said she looked a bit bemused by it all, but even had she just turned and walked off, the concequences don't bear thinking about)
I can only assume that they view horses as some sort of public amenity, and feel in some way as horse owners we 'owe' them something. They see it as a way to entertain themselves or their children for free, and because they are ignorant of the concequences, they believe they don't exist even when told. I think the stereotype plays into the last bit and they feel justified in not listening because of the stereotype. Then when something does happen, they'll say "I didn't know, I was being nice!"