No worries, just let the man formally abort the child support if he wishes.
Let the woman decide what she wants to do with her baby, and the man decide what he wants to do with his money. Simple, if the woman wants the baby but the man does not, then he should not be financially responsble for anything to do with the baby.
If the woman doesn't want the baby and the man does, then too bad, he's out of luck - unless maybe the woman agrees to carry the baby to term and be paid for it by the man, and then once the baby's born she can give up her parental rights and responsibilities entirely to him, like a surrogate mother.
Who do you think it is that is forcing men to pay child support? It's the same oppressive Patriarchy ruling by force, in this case for the benefit of women and children. Elsewhere it used to control women for the benefit of men. You enthusiastically got rid of that part, but somehow feel entitled to still keep everything that the same evil Patriarchy afforded to women in terms of the child support, alimony, etc. Nice scam and scram tactics.