I don't think people should look for Satoshi.  He served his purpose and rightly exited stage left before those not in favor of innovation in finance dragged him in front of congress to explain his creation.   

As those who benefit every day from the work that he did, I think it's inappropriate to take his disappearance as a challenge when it's clear he's just a normal guy who wanted to help the situation but didn't want to sacrifice his life to the cause.

Respect that.