Having been born into their family, my parents were ethically obligated to love and care for me.  Yet, I am quite grateful for every bit of love they showed me–probably not as grateful as I ought to be.

Having married me, Jennifer was obligated to be a loving and faithful wife to me.  But I am totally grateful for all she has done and continues to do.

This is an obvious reality that we should all acknowledge and be thankful for.  How did we put ourselves in such a theological dead end that this is some sort of threat to our faith?