"Actually, to be biologically correct, it is the child who
"pre"/subconciously creates itself. The parent only provides fertility
and nourishment"
This is a straw man.
When you drive your car, you are fully aware of the possibility of an accident occurring.
When you point a gun at another person and pull the trigger, you are aware of the (rather good) chance that they will die or be seriously injured.
When you direct your penis into a vagina without a condom or some other form of contraceptive, you are fully aware that such action may produce a child.
In a free society, the individual is responsible for the consequences of their actions, and these examples would all constitute an implied contract with society. Adoption is now an alternative, but both parents would have to agree. Perhaps if the mother refused to give the unwanted child up for adoption, the father would then be released from his obligations to support the child.
The market would in fact provide adoption services, but the parents would probably be required to pay a fee for their services, but maybe not. The exact terms would be determined by the market, depending on the supply of unwanted children and the demand of child seeking parents.
All this being said, I find the whole tone of this discussion reprehensible. Creating some intellectual defense for fathering unwanted children is not productive to anyone who honestly believes that society can function with freedom.