Burning oil has not immidiate effect on the enviroment, and the harm to the person that burns the oil certainly doesn't outweight the benefit. Does that mean that burning oil is morally just even when one can avoid doing so? I think not, as the long-term effects are negative, and you will hurt people in the future, and you are preventing future people from living dignified and happy lives.
You simply don't understand the future value argument, do you? Why do you keep claiming that we do not need fetuses; that is actually an ad hoc. Of course, nobody need fetuses. However, every single person needs not to be killed as a fetus to live --- every single person needs to be born, and every single person exists specifically because their mother did not have an abortion. THAT is the argument. Any girl lives for the reason that their mother did not have an abortion, and for them to take an abortion means they act in contradiction to how they want to be treated. Any girl is happy to be alive --- thus happy for their mother not taking an abortion. If they then take an abortion themselves, they are doing excactly what they are happy their mother didn't do.
Kantian ethics suggests moral law be created where the result of an act contradicts the motive if everyone did so. If the motive of abortion is for women to be happy, then the result of everyone taking an abortion (no more happy girls) would contradict the motive. Thus Kantian ethics would deem abortion immoral.
Even your own syllogism for morality in your abortion debate would agree.
P1: Humans value their own well-being
P2: If you desire others to respect your well-being you ought to respect theirs
Con: Therefore you ought to value the well-being
Now why does this syllogism agree with my conclusion? Because the well being of girls is a direct result of being alive, and thus a direct result of some abortions not being taken. If girls value their own life then they value their mother's decision not to take an abortion, and by your syllogism ought to make the same decision for their fetuses. If you still deny that abortion is immoral you must rephrase your syllogism so that it doesn't deem abortion immoral.