I'm slightly weird in that outside of the bedroom I am very assertive and confident and definitely not submissive to anyone, however in the bedroom I like a man to be dominant and sexually assertive, but only in contrast to extreme gentleness otherwise it's just a violence fest and in no way sensual, there HAS to be for me a contrast. That being said they have to be assertive in a certain way and I'd die laughing if he pranced around in an outfit being all panto villain, and so I have been accused in the past of 'topping from the bottom' lol because I very much know HOW I want my man to be dominant which doesn't really make me submissive :/ Hmmmm.
But the essence of it for me is that you are released from all responsibility for yourself and place your trust entirely in your partner for your pleasure, wellbeing and safety and when that is rewarded with pleasure, wellbeing and safety that's a very close very unbreakable bond formed which I love. It's not what you do, it's why you do it and how close it brings you together.