Is this consensual?

When I was able to catch my breath and think about it, during my many days and nights of getting my ass beaten, the thoughts came to me:
 was this ... (our dynamic) ... (her, spanking my bottom whenever she fuckin' wanted) ... was this consensual?

Was she doing something that was against my consent, against my will?
Is physical punishment a dynamic that morally or logically should be utilized between adults?
When adults, married couples, have their differences, shouldn't they be able to talk them through, or sometimes simply agree to disagree on some issue, and move on?

I remembered signing an FLR-DD agreement before we married.
Yet I knew, and I know, it's not 'enforceable' by any law.
However, her agreement to marry me was contingent on my agreement to the terms of the 'contract'.
So, if I "declined" to abide by any of the demands she put upon me, if I did not show myself as ready and willing to accept discipline from her on her terms, would that be some kind of breach of contract, and give her reason to seek a separation or divorce?

And so, did I love her so much, that I submitted to her discipline JUST so she wouldn't split up with me?

Eventually, I figured out my answers.

No, I did not love her THAT much.  

I simply, on some level, shallow or deep, enjoy the control she holds over me. 
The spankings she gives me HURT LIKE HELL, no doubt about it.
But, I actually enjoy the feelings of dread and trepidation that I feel in the pit of my stomach, prior to the beginning of a disciplinary session.
I enjoy the emotional release I feel as the spankings go on and on and on and on...
I enjoy the afterburn or afterglow in my bottom, once it's over.
I enjoy the lovemaking that occurs on a very regular basis, almost as often as the spankings, seemingly as a direct result of the arousal she gets from spanking me and the arousal I get from being spanked.

I came to accept the idea that:
 Many times, a voice inside me says, "But I don't wanna be spanked!"
 Then another voice pipes up, "Oh yes I do!"

So,  I guess ... that does make the whole dynamic ... consensual.