Finished TGD yesterday evening in an epic session at desk... Previously I had been reading it piecemeal, in bed. Much more satisfying to read in proper light, in a solid chair.
The chapter "The Roots of Morality: Why Are We Good?" I found edifying, as it provides a collection of reasonable non-religious explanations for human morality via an evolutionary mechanism. (I apparently fit neatly into the 'Tit for Tat' category... Give everyone the benefit of a doubt once, but avenge the bad stuff.)
"Childhood, Abuse and the Escape From Religion" was a painful chapter to read because it documents the emotional damage that indoctrination can do to kids.
But overall, I got the most out of the chapter "Why There Almost Certainly Is No God", which contains the "God-as-Ultimate-747" argument: A pre-existing being capable of creating an entire universe would be more complex than the complex thing it supposedly "explains".
However, I see no reason that we can't one day evolve into gods. Hey, I'll sign up for that. ;-)