Two words.
Apostolic Succession.
You don’t understand the first thing about the ‘tradition of the Church’, which is why you believe this argument is reasonable.
No, it’s not, and this argument is the same, old, weak argument from before that unless women can be priests that women are somehow inferior. Would you say that a man is inferior because a man cannot have children?
That is why they call us protestants because we do not buy into the Catholic doctrines established by man. These doctrines have absolutely nothing to do with my salvation nor my personal relationship with Christ.
Spiritual equality.
If you talk with a supporter of women priestesses for long, you’ll come to see that their argument is not based upon concepts of holiness but on power and the equal access to it. They see the priest as being a position of power and they covet that power.