Satoshi is a very smart man, he is a visionary but he is not a crazy for fame. So he kept his identity a secret, because he already knew that Bitcoin would be very successful.
I do not think he intended it to be this way when satoshi created bitcoin. And I do not think he imagined it would bloom into this big, this fast. We deviated from the original intentions of bitcoin, but if I am satoshi, I would be very proud. His creation paved way to a new economy and keeps growing and branching out.
if you used bitcoin as a payment, you might loose profit when its price is increased. So i must say that satoshi did not expect this to happen, he did not expect all of this.
But what if the Bitcoin transaction actually brings a lot more profits than HODLing it which is unknown when the price will rise again? If everyone only uses Bitcoin as a means of speculation to get profits with investment as a reason, then how will Bitcoin keep its value other than its speculative value.