system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why are there so many Martial Arts in Asia?

TaiChi, Taikwondo, Karate, Kung Fu, Kendo, Muay Thai, and others. Why did Asia generate so many martial arts?
gpt
Asian cultures did not necessarily produce more martial arts. They just preserved them better. 

However, it's true that in China's case, education in militarized martial arts was more prolific than in other cultures. Folk fighting styles were commonly practiced by all people everywhere, but a high proportion of commoners in China also knew how to wield proper weapons of war. This can be attributed to the difference between Chinese and European monasteries.

Chinese monasteries were huge landed estates, filled with a lot of wealth and resources. At many points of its history, the Chinese states were consumed in war with one another, forcing the monks to institutionalize martial arts in order to defend themselves. The Northern and Southern Shaolin Temples were destroyed multiple times, and many monks went into hiding among the general populace to escape persecution, spreading their teachings among the locals. Eventually, many of the folk martial arts they practiced declined in popularity and styles derived from Shaolin kung fu became the norm.

The European situation was different, but martial arts still became wildly popular. Wrestling and later fencing was practiced extensively by all nobility, producing dozens of different schools and styles.

Some of those martial arts you named are modern. Kendo, Tae Kwon Do, and arguably Muay Thai were all made in the 20th century, though they were derived from older martial arts.