In this short time I have researched who is Satoshi. I've come across articles of people claiming they are Satoshi. I can tell you that they are not Satoshi. I can tell you they are Satoshi. So I know who Satoshi is. Satoshi is not a person. Satoshi is an idea, that idea is Bitcoin. It's the idea of individual control.
Actually
Satoshi has a forum account, and
575 messages stored for posterity...
It's really interesting to go through his profile and read his first posts when bitcoin was just launched. I am wondering how this forum would have been and also how bitcoin would have looked if he would be here with us today. But there are millions of users of bitcoin and of this forum today and that's probably the main reason why he decided to leave early.
If Satoshi were to be active on this forum, he would only endangered himself as people would start to track down his IP address. But things would be entirely different if he were active as all ambiguities would be addressed and answered. In addition, there would be constant updates and improvements to the blockchain that would benefit more the community.
The main question is why Satoshi is not known to anyone till now. There are few questions about him which will remain as a mystery.
1- Is Satoshi alive in this world or not ?
2-If he is alive, does he do not have the courage to come in front of people and declare him as a "Satoshi"
3- Does he hold a major portion of the bitcoins ?
All these questions will remain unsolved.

1. If he were alive, I bet he is just waiting and watching the market;
2. If he would expose himself in the public, he would put his life in danger as people might kill or even kidnap him;
3. I think he kept a reasonable amount of bitcoins. Maybe he is also an investor like one of us and he's making millions right now.