Even though Satoshi is presumably using a different account and is somehow present with us in the forum. Do you believe he would be willing to find the time to respond to each of the 20 questions you have posted here? Do you believe he would be willing to provide you with a thorough response to your questions along with an explanation of his story, even if he does have all the answers for you? Before raising your eyes to look for the answers to your query, keep this in mind.
I believe that over time, as you become more comfortable with the forum, you will start to find the answers you're seeking for on why Satoshi made the decisions he did regarding the establishment of bitcoin.
That being said, Satoshi had good reasons for continuing to maintain his anonymity even after inventing bitcoin. The decision to continue using anonymity was the finest one he could have made for his life and the future of bitcoin.