I can understand the braiding so they look neat. I can't get ahold of why people pull out the hair from a horses mane.
I see my horse all the time use her mane to flip off a fly, I'd feel so bad for her if she didn't have any mane. When she stands in the rain with her head down the mane helps the water roll off. She stays dry under there.
lol, maybe I'm not understanding what "pulling"is