Dominance?

I dont understand why men are made out to be the dominate ones in relationships. I mean, that was acceptable back in the 18th century, but it's the 2000's now and it's completely unfair in todays 'modern' society where equality is something being widly introduced. Plus, we already have great unfairness in this world, with things such as poverty and famine tbh and this is something we can easily change so that both men and women, have equal shared status in the relationship. Honestly, to have things to work smoothly, you simply just can not have one person dominating over the other, that just causes controversy and disagreements. Men seem to think its alright to be in charge and push women around, it makes me sick to think of all the violence and mistreatment these women are facing at the hands of their 'men'. In hindsight, I think women are fully capable of doing 'a man's job' and we shouldn't be degraded because of our size or pre-existing stature in places such as the business world and economic industries. I hate to think that men automatically assume they are the ones in control of everything and that its in their primordial instincts to govern women around, because that's horrible. Men have no right to power over women and use their physical strength to dominate us. I just wish everything had justice in this world and it was possible to live without unruly pain and suffering.