Let's be perfectly clear. It is NEVER okay to take a person's freedom for your own profit or pleasure. It's not okay to chain, restrain, beat, whip, flog, cut, or otherwise harm or hurt or have sex or engage in any sexual activity with a person against their will. NEVER. No qualifications.
This has bothered me for a long time. BDSM is not about imprisoning and abusing someone. It's about a person needing to give over control to someone else for a time for their mutual pleasure and/or release.
When you make comments about how 50 Shades of Grey taking place in a trailer park would just be another episode of Criminal Minds, your ignorance shows. It's not about wealth, it's about consent.
There are a lot of reasons a person might choose to be dominant or need to be just as there are many a person might want or need to be submissive. You'd be hard pressed to look at a room full of people and figure out who and why they might want this. It's not your business anyway.
Abuse, is everyone's business but it's very different than BDSM. A woman or man who is abused needs help. If you look at them with open eyes, it will be easy to see the difference. Abuse sucks your self esteem, energy and health away.
Neither person should be judged.