There is no doubt that there are power roles in any relationship, it does not even have to be romantic. Most failed relationships occur when those roles are not fulfilled, one must lead and one must follow. My parents divorced (I was just a wee lad) because they both wanted to be in charge and make all the decisions. I have also seen many relationship die because no one wanted to make a decision, one is spectacular to watch and one just fizzles.
I think where you end up in the discussion we are having is when it moves to be combined with our kinks and fetishes. Many times the roles are reversed from the "outside" world in order to provide that escape from the mundane. I do not disparage people who "live" BDSM as a lifestyle I wish them all the fun and happiness it can provide. I just wish that they didn't put off the vibe that those of us that do not are not really into it. Just look at us as the "National Guard" of kink, a couple of weekends a month and two weeks a year to keep all our kinks up to date and fulfilled.
I agree with Strypi's Beast in that modern culture portrays men as drunks and dullards and then scratches their head (or more correctly other parts) and wonders why men pantomime the roles they see. Unfortunately for young men these days there are very few positive roles portrayed in modern culture and even fewer are based in realistic settings. Behavior has always been taught through first stories, then plays, and now movies and television. If the positive roles are not there then they will mimic the negative ones provided.
Alright now lets look for the off ramp from this tangent so we can back to the subject. Whose's lining up to tie me up and spank my ass..