It's unclear HOW they became friends, WHY nothing ever happened (beyond
the truly weak argument of lack of physical attraction), HOW they maintain their old married couple ease, and WHY he doesn't bend over backward like this for any other woman.
As for number 10, if you
truly mean what you say about the
weak arguments of theists, then you recognize the weakness of Dawkins» statement (actually, I'm pretty sure it didn't originate with him).