Hierarchies - to a degree, patriarchy - not really. I think that the answer to the question of a proper human organization resembles something more like a dance than a rigid structure.

To be more specific - I understand the word "submission" as a temporary and partial ceding of control over yourself to somebody else. And the degree of proper submission to others greatly depends on the circumstances, the competence of the person I'm submitting to, the relation of trust between us, my own competence/skills and a host of other factors. Therefore, the structures of authority and submission should never be to rigid - sometimes I lead and sometimes I'm led. However, some people will be more equipped to leading than being led and vice-versa. And this is the degree to which I believe in hierarchies.

I find this dynamic to be reflected in multiple aspects of life, including sex. And like in sex, I do believe that if the dynamic is based on trust and love, it won't really matter who's submitting to whom at a given moment.