It might be naive of me, but I found it a bit incredible that they could have "evolved" all those rituals in just a few short years. I guess you could argue that the mindset from which they came was always there just under the surface, but one thing seemed especially unlikely, the impregnation ceremony. I couldn't believe that given the choice between (1) making a man have sex with a woman who wasn't his wife, and (2) using some means of artificial insemination, an extreme religious society would opt for (1).
My bolding -- but I nearly fell out of my chair laughing when I read that "making"! With all due respect to every man reading this who would never contemplate adultery, I really don't think these men are in any way forced to have sex with a handmaid. The men involved are at the top of the pyramid of power, and like all people who have power they are taking whatever they can get whenever, however and from whomever they can get it.
As to the religion argument, do you really think any extreme religious society so disapproves of men in power having sex with different women that it will pursue technological means to avoid it? The men who are allowed handmaids are the ones who make the rules -- and allow themselves to break them -- so what's more likely, that they'll deposit sperm into a cup, or straight into a woman?! We're talking power dynamics here, not simply the propagation of the species. (If I'm remembering correctly the prostitutes they use are sterilised first so there are no pregnancy complications, so the whole must-have-children rationale of the handmaids is seen as the fig-leaf it truly is). Having the real -- supposedly infertile -- wife there in the impregnation ceremony simply pays lip service to the religious ban on adultery without actually preventing it.
There's also the issue that it's a tenet of faith in this society that no man is infertile, only women are -- which is of course the age-old lie of barren women being at fault. Extreme religions tend not to be sympathetic to reproductive technology in any event, because it's, well,
artificial and what man would know what sperm has actually been implanted into his property? But if it were available, it would surely raise rumours of the leaders' true lack of fertility, starting with the technicians who understand such issues as sperm motility and then getting out into the wider population.
I'm with CC on this. I never doubted for a moment that religious bigots could evolve such systems very, very quickly, but I'm perhaps more hopeful -- or more naive -- than he is, in that if it did happen to a previously civilised country there would be enough people around who remembered what life should be to bring it to an end relatively quickly. And, of course, the book only works because the main character has had a child beforehand and is still of an age to be fertile, so it's necessary for the timescale to be telescoped into a shorter period.