[It's simply because he rather understands such a perspective. There are many things - most particularly regarding his personal life - which he doesn't want anyone to pry into. Thankfully his companions back home are aware of this. They realize that he'll speak of them if or when he feels ready.]
Agreed. I suppose the sliver of hope that we do have is the fact that there are glitches in this system on occasion. We don't know what could happen— even if that in itself is a double-edged sword.