Why do humans nail horseshoes, but wild horses don't need it, so that the horse doesn't hurt?

In ancient times, due to the lack of industrialization of human beings, horses were basically used as tools when traveling long distances. Horses are very useful animals, both in everyday life and in war, so we say that the tame Malays are the most correct means of transportation. When we watch costume dramas, horses are generally nailed with horse nails. Why is that?

In fact, in ancient times, horses were equivalent to luxury cars. Not everyone can have them. Only some landowners or officials had horses as a means of transportation in their homes. The average person usually travels on foot. In the beginning, when people tamed horses, they valued their endurance and explosiveness.

Among the many animals, only horses and cattle are less difficult to tame, and they are more hard-working, especially horses, which carry thousands of miles of people and do not slack off at all, but after humans entered the industrial age, horses gradually became some entertainment for the rich.

Moreover, the probability that we will see a horse in real life is also very small. Basically, we can only see it on TV or on the horse farm, and there are things like nails growing on the hooves of horses, which make it impossible for horses to walk, so in order to prevent horses from growing these things, people will make horseshoes on a regular basis and nail horses to horses.

Therefore, although pet dogs have been with us humans for a long time, it is our good helper horses that have really served humans for hundreds of years. Now that humans don't need it anymore, many horse farms will raise a few horses for tourists to experience, and the horses are also living a retired life!