I was never raised with terms like ethical or moral and I don't actually believe in either. A moralist is a rigourist with a talent for justifying anything. One persons ethical behaviour is another persons unethical behaviour.
What use are they?
Whether it's abortion or stem cell research I think they should be judged by how pro or anti human they are especially in terms of the individuals who choose them, the circumstances or who in particular might benefit and in what way. It's not valid, for example, to say it's equally wrong for a woman in a slum who already has eight children to have an abortion compared to a mega wealthy socialite in London who just found out 7 months in that the pregnancy will interfere with her holiday plans. With stem cell research it's not logical no matter what the ethics or morals claimed apply to put a bunch of embryonic cells on the same level as a person suffering from a spinal disease. I think it's possible to argue that discussing things in terms of ethics and morals is one of those unwinnable games of see saw the religious mind has drawn reason into.