Dear. Nakamoto Satoshi

Hi, Nakamoto! This letter is from South Korea. I tried to contact you, however, I couldn't find any information about you. So, I decided write letter in here.
Nowadays, Bitcoin market is getting bigger. So, I read your thesis paper. It was amazing. However, I worry about bitcoin market. Some people said "coin market is buble", If buble breaks, a lot of people lose money. I wonder, when you develop bitcoin, what is your purpose of create bitcoin? Did you create bitcoin for money? or new economy system? Did you really believed that bitcoin will be a new currency? Still a lot of bitcoins are didn't cashed out and lots of bitcoin didn't come out in the market. I think if you wanted money, you already cashed out. But you didn't. A lot of people interested in bitcoin. However, we should think about block chain technique. Block chain technique is critical technology in 4th industrial revolution. So, I have few questions to Nakamoto Satoshi.
If you see this message, please message me.
Thanks.