God didn't equip me with negative feelings towards surgical excision and chemotherapy of cancer. Consequently, cancer mutations must be made by Satan.
I don't really have any negative feelings towards killing off other rouge cells, like getting rid of hydatidiform moles, and it is ok to get rid of cells where there is an abnormal karyotype as well. There has to be more to it then the simple rule of thumb I stated first, otherwise I would feel bad about several issues, like helping the mom survive an ectopic pregnancy, and I don't feel bad about that.
Well, then, you have understood my point. It was only to point out that such a simple rule of of thumb can not, and should not, be used on such a complex issue.
Though, I do not believe Satan has "made" anything, as this is not exactly a biblical statement to make.
[Going to my take on abortion -->] I feel sentience and spirit should be the judging factor on abortion. When does the fetus gain first conscious thought (sentience), as this should be the point at which no life should be terminated by human intervention. Granted, I don't feel I have a set time at which this occurs, nor am I certain there is any set time period to be honest.
I, overall, am against abortion if not entirely, and generally, medically, necessary - such as saving the life of the mother, in which case it is a necessary evil. The thought of killing a sentient beings chance of gaining consciousness should, to me, be enough to warrant serious reflection on the use of abortion.
I wholly support the choice of adoption, if one absolutely can not take care of the child/truly does not want the child, over abortion.