We were going off topic, so I figured I would start a new one.
The lineages of those two styles include people who studied martial arts in China, so that is a little different. Do you consider Higaonna/Higashionna Sensei or Miyagi Sensei as the founder of Goju Ryu? I want to say that Higashionna Sensei did come from Pechin class as well.
I suspect that there is no single answer, that people studied for different reasons. I do think that self defense in the way that we think of self defense was a low priority, even back then. Okinawa is not really a place where people get attacked for no reason, and neither is Korea. In Korea, people get angry at each other, and may act like they want to fight, and may even make motions like they are ready to fight, but when it comes down to it, it rarely happens, even in places like bars. It's just not how people are raised to act.
If you want to research self-defense practices and their need on Okinawa, it might be more instructive to look at the Uechi-ryu and Goju-ryu lines which had much less of an aristocratic heritage to them. Although Miyagi, Chojun came from a wealthy merchant family, Uechi, Kanbun's family were radish farmers.
The lineages of those two styles include people who studied martial arts in China, so that is a little different. Do you consider Higaonna/Higashionna Sensei or Miyagi Sensei as the founder of Goju Ryu? I want to say that Higashionna Sensei did come from Pechin class as well.
I suspect that there is no single answer, that people studied for different reasons. I do think that self defense in the way that we think of self defense was a low priority, even back then. Okinawa is not really a place where people get attacked for no reason, and neither is Korea. In Korea, people get angry at each other, and may act like they want to fight, and may even make motions like they are ready to fight, but when it comes down to it, it rarely happens, even in places like bars. It's just not how people are raised to act.