Is struggle needful?

I came across someone's lament that people often disparage her dynamic b/c she doesn't struggle with her submission and she is never pushed outside of her comfort zone or asked to do anything she would rather not. She finds comfort in the fact that if a disagreement were to arise she and her master know that he has the deciding vote and that is what makes theirs an M/s dynamic.

Thinking on it I can't say that continual angst sounds like the making of submissive bliss to me but only having to do what I'm inclined to do also doesn't sound like a blissful existence to me. I think it would be well and good to assume that I would do as he demanded when it wasn't to my liking if that assumption was never actually put to the test. Anyone who knows me knows I am a comfort loving creature so I'm not advocating the life of a slave be filled with unpleasantness and I certainly don't think anyone need prove anything. I do think the people involved should be introspective about their motives. Is the master not asking anything outside of the slave's comfort zone b/c their desires happen to be that closely aligned or is it b/c there is a fear of not being obeyed or a desire to avoid a row or is the desire to not cause their slave any distress/unhappiness stronger than any other desire they may have? Are the slaves feeling content in their submissiveness precisely b/c they haven't encountered a challenge to behave in a desired manner, did they intentional pick a master who wouldn't push them for fear of failing to be able to obey or lack of desire to relinquish full control?

There actually may not be anything negative going on at all and if everyone involved is content with things then it can hardly be considered bad.