The woman can end her responsibilities at a whim, the man has no power at all. If the woman wants the baby, there is a baby born. If the woman does not want the baby, a baby is not born. If the man wants the baby, who cares, your wants and desires are irrelevant to the life of the baby you helped create. If the man does not want the baby, who cares, your wants and desires are irrelevant to the life of the baby you helped create.
This is called getting the raw end of the deal...responsibility without any authority.
The woman still has to go through an abortion to end her responsibilities. You can't just gloss over that as nothing.
If the woman wants the baby, a baby might be born (there is a pretty reasonable chance the fetus won't survive), and the mother has to actually carry and deliver that baby. Again you just gloss over that as if it's nothing.
The woman also has to live with the social stigma regardless of her decision (society doesn't look too highly on either abortion or single preggos).
It does suck for the man that if he wants to keep the baby the woman still has the right to terminate it, but that's still a better deal than what the woman has to face. And that's really a result of nature and nothing else. The reason he doesn't get that choice is he is not physically capable of going through with it. It's really easy to tell someone else to carry and birth a child. A lot harder to do it yourself.
If the man doesn't want the baby his responsibilities are financial only. He's not legally obligated to even see the child.
Are you seriously trying to tell me you'd rather your daughter get pregnant than your son get his girlfriend pregnant (in the case that it was unwanted)?