FC said, "So what if an embryo only has a 20-30% likelihood of attachment to a uterus that is prepared to accept it? Are you saying that because an embryo only has a 20-30% likelihood of attachment--murder is morally justifiable?"  

I am saying it is impossible to call the loss of an embryo murder; most are lost anyway. To call the loss of sperm  murder is equally ridiculous.  

Believe it or not, I do not personally like abortion at all, but I personally believe that some are medically very necessary to prevent the loss of life of a woman and or mother.  So no I do not support either abortion or death penalty.  I would however appose any law that categorically refuses abortion in all cases. Such a law would be ill advised and completely unethical.    It is also ludicrous to call loss of embryo's abortion or even more ridiculous to call it murder.