Oh Boy!! Did I just open up another can of worms? This can be quite controversial but here we go...
First of all I want to say "To each their own", and yes we (humans) are responsible for the domesticated horses looks right down to their feet. Some say they are not like wild horses feet anymore. I do agree that some horses need shoes due to injury or confirmaion etc. I'm not against shoes at all. Sometimes I think that horses are shod for no reason though. Constant shoeing can damage the horses hoof wall too depending on the horse.
Wild horses travel a lot of miles a day and wear their hooves down naturally. The hoof may not look pretty, it will look jagedy, but that is natural.
Most people like their horses hooves to look nice, some may see jagedy hooves as not taken care of. This is true if the hooves are
long and jagedy throwing off the horses confirmation like high heels do to us.
Chipping back is a natural process. But domesticated horses dont get miles of travel/work in a day so this is where trimming them is needed. The natural trim best mimics the trim the wild horses give themselves, without the jagedyness.
Now my horses; well, because two of them were unwanted rescues they have feet issues. One due to injury and the other due to bad confirmation. The third horse who wasn't a rescue (I just bought him from a very distressed friend) is club footed and turned out in the front like a ballet dancer. Well none of them are in shoes. Their feet are trimmed and shaped according to their issue. Big Joe my big brown horse rides in special "tennis shoes" (Old Mac's) designed for horses because he has tender feet, funny because he is over 1200 pounds and looks so tough!
Hope this helps you understand a bit more.