JoanK is absolutely right about boats. If you feel it, there is something about them that is very powerful. Although I’m an inept seaman, I do feel it. I totally understand why Zeitoun bought the canoe to begin with, and how he felt paddling around in it.
So here he is, in a complete no-man’s-land, paddling around in the eerie silence, It’s really surreal—he can see the upper stories of everything he knows. He’s the captain of his vessel, small though it is, back to his seafaring days.
I bet that most people, no matter how happy their life, see the appeal of a stretch of being elsewhere, out of all their normal concerns, and I think that happened here. Zeitoun was happy and fulfilled in his normal life, but the chance to be in this isolated capsule for a while must have been pretty attractive.