This is starting to head in a pretty misogynistic direction, but setting that aside for a moment: why the insistence on literality when it comes to women's roles but going deep into metaphor with men's roles?
I mean, are you suggesting that God impregnated something in order to make the universe? If not, why not (and why the insistence that being a metaphorical mother implies "giving birth")?
So you think literal human fathers aren't fathers?
Nothing I say is misogyny, I don't have dislike, contempt, or ingrained prejudice against women. If I tell there is a difference, it is because that is how it is, not because of hate. And even if a woman would be different than a man, it does not mean they are not as valuable, or not to be appreciated. I think it is disturbing that nowadays people seem to think that people must be as "good" in every way to be appreciated equally.
I think I have no difference in how I see women's role to how I see man's role. They are different both literally and metaphorically. But, in literal and metaphorical way father is the originator, first cause, the thing that starts the process.
I believe God created world and life from nothing, therefore there was nothing to impregnate.
And by what I know, father means literally to initiate something. And mother to give birth. Maybe you disagree with this, but that is the way to understand the difference and reason why the word is used as it is used.
I think human fathers can be seen as biological fathers, but, in Biblical point of view they are only because of God. That is why God is the only true Father, because He is the ultimate cause, reason why all exists.