I think it's important to examine why we like what we like. Not just for knowing ourselves better, but to effectively discern the nuances of others when dealing with them.
For example, many doms are just narcissists. They might study the lifestyle, but their interest in the position is fueled entirely by a need to manipulate and be revered in some way. Every position might be the result of some unhealthy psyche or unresolved trauma. Other times, it is simply loneliness (this is far more forgivable, of course)
I do think that fundamentally, all human relationships involve the constant forming and healing of new highs and lows. However, the intent and awareness behind it are what matter. The whole of the world would probably be a better place if we honestly examined these things. Though communities like this would likely shrink as a result.