In response to various criticisms of Dr. Sears's books being autocratic and unscientific, it seems to me a little "projecting" is going on. The one main thing Dr. Sears states time and time again in his books is that if at anytime you start to feel resentful of how AP is affecting your personal time or relationship, stop and reevaluate and change things. What he discusses in his books and makes very clear is that this is an IDEAL. To use an unrelated example, the more servings of fruits and vegetables one has the better, with 7-10 servings being ideal. It is unlikely the average American consumes this amount, but would anyone argue that this is beneficial?
I read this book when I was pregnant and was all primed and eager to institute every suggestion to its optimum. As it turned out, my child's personality required nothing less than AP. However, I could not "wear" my baby as much as I would have liked due to back strain. He did sleep in our bed, but that was because it was convenient for me, and I was able to get the best sleep that way. I did not continue to feed him through the night after 6 months, though, because I wanted some sleep, and he didn't really need it nutritionally. Listening to Dr. Sears, I did what felt right and made me feel least resentful, and I weaned him from nightfeedings with the help of my husband (also a Dr. Sears suggestion). I also weaned him to sleep beside our bed, rather than in it, when it became too uncomfortable. None of these things were difficult to do because it was just a natural progression. I think the main point Dr. Sears is trying to get across is get in touch with YOUR child. Pay attention. Trust your instincts, not some experts' generalization. He, of all people I'm sure, would agree that applies to him as well.
As for there not being any scientific facts to prove that the AP approach is a better approach. Just engage your brain. Which would you have rather had as a child: A caring, involved parent or an efficient nanny?