Sorry in advance, I'm not picking on you, you made a point about something I was going to remark upon.
I will take primary (or 'own the road') when I think it's safe to do so. You cannot make other road users respect you, you kind of have to ask that they do. There are situations where it's suicidal (at worst) and belligerent (at best) to assert yourself and demand respect. It's me that's the vulnerable one so I will take the coward's option, if I can put it like that, in my own best interest.
I do believe in, and try to practice, being 'situationally aware' and will modify my actions accordingly. There are occasions where I might well be in my right to do something (e.g. take primary) but will opt to pull over (for instance) instead. Fast A roads (as mentioned above) are an instance where I might well choose, out of self interest, to not attempt to take control.
I suppose, simply put, I don't ride to provoke and if I judge that my actions might well do that (however 'correct' they might be) then I back away.