[tertius]

Those who do what you suggest should be taught in a loving relationship how negative their behaviour is. Even if the media encourages it.

If there is dominance by either partner, the relationship will have difficulty staying healthy in the long run.

As you say, family first. Both should view the other as having more importance than themselves. Not just one or neither.

[derefr]

> If there is dominance by either partner, the relationship will have difficulty staying healthy in the long run.

I think you mean, if there is dominance by both partners (i.e. one partner asserts dominance and the other resents them for it, or both partners vie for dominance), the relationship will have difficulty staying healthy in the long run. Well-defined D/s relationships, on the other hand, can be quite healthy.