I wouldn't be satisfied with your sex life, but I am much less inclined to be apologetic about it. I DO appreciate H's efforts and I don't want to come off as impossible-to-please, but on the other hand, I refuse to sell myself short and end up resentful.
Fwiw, I do believe that your wife wants it sometimes. She is a human being with sexual urges and she may not want it the majority of the time, but I'm certain that there ARE times when she's horny. The problem is that she acts the same way every single time. Reserved, awkward, etc.
This is fear. She is scared and feels inadequate and as if she is "no good" at sex. The only way around it is for the two of you to tackle it together, don't you think? Try new things a little at a time..work at allowing her to be stimulated during sex..compliment her liberally but try not to let her backslide into the comfort zone every time.
But the first step has got to be to rid yourself of the resentment and the only way to do that is to communicate your creeping dissatisfaction to her.
I think the moving target thing is a valid concern. I am guilty of that myself, but I don't think you're at that level yet, Z-Bube. (you are aware that you have a rapper-sounding handle now, aren'tcha. LOL)