What about a child already born? Would you say the same thing, that she can kill her child because otherwise he'll grow up in an abusive home etc. etc.? Of course not, because a parent's irresponsibility isn't a pardon for murder. So, if a fetus is a life, the same would hold sway. Future recklessness on the parent's part doesn't justify taking a life.
good counter point, i never thought of that argument
going back to the original discussion about planned parenthood and the attacks by republicans: aside from the moral arguments around PP, the republicans also want to completely defund PP because it is being "double funded". while yes, there may be less public funding for PP in the future, since the affordable care act now mandates that birth control, cervical and breast cancer screenings, prenatal care, reproductive counseling ,etc. will be free of charge for those with insurance so these services will now be free at hospitals and private clinics. However, there are still a lot of people without insurance that this does not cover (for many people, the tax for not having insurance is 1/10 the cost of buying insurance off the exchange) who may depend on PP for health services. And btw PP does in fact provide services other than abortion. Most hospitals (at least here in CA) offer abortion procedures and also most nonprofit hospitals receive funding from local property taxes. So whether or not you defund PP, tax dollars will still be supporting facilities that offer abortions.