It would be equally fair if no one had the choice to "terminate"! Let's be honest and call it "kill." Unfortunately, that's not the current legal situation.
If you want to make the law fair, shouldn't you be aiming for fewer legal killings, rather than more?
A telling slip.
To be truely "fair" it would have to work like this.
At any time while it would be legal for the mother to obtain an abortion a father can file for a "male abortion." This filing in court (should cost about as much as an abortion) denies all rights and privileges of fatherhood as well as all responsibilities. It makes the child "dead" as far as the father is concerned. Legally, all he's done is kill his unborn child, which is far nicer to the child than simply refusing to support it financially. I say this because women are celebrated for killing their children, while men are demonized if they allow their children to live but refuse to support them financially.
But if we really did that, then the power game would be over. You presumed that I thought abortion was about women exercising power over their bodies. It's really about men exercising power over women. While abortion was illegal or difficult to obtain, women could use the possibility of pregnancy to assert their power over when and whether to have sex. With the advent of effective birth control, and more importantly the advent of abortion as birth control, men can force women back into the role of sexual plaything. Thats what the men want, and that's why they work so hard to keep abortion legal. They also continue the charade that abortion empowers women.
Why women fall for that is beyond me.
Shalom.