Here you make [ ] mistakes in what my point is I think. Firstly regardless of a topic you're assuming that morality on said topic is a single thing, that there is a good and a bad. Yet we have no way of knowing such a thing exists, let alone how to apply it to this (or any other position).
To carry on with this topic, morality centers in on right and wrong and either abortion is good or it is bad and evil. I'm getting specific in centering on abortion but it still revolves around whether we can find objective values from it and whether abortion is right or wrong and how anyone can know. It can't logically be both. If you don't know the truth on the subject matter then you are either ignorant or a relativist because you can't find moral objectivity from relativism. All a relativist can do is push for his/her desired preference or use force to establish it.
I'm saying that if X on Abortion can mean Y, or Z, or Q or P, then you lose the meaning and identity of X or whether it is good or evil. The central issue regarding abortion is whether the unborn is a human being and whether human beings have value.
Science says it is living. Do you believe that statement is a fact?
Science says it is a living human being. Do you believe that is a fact?
Science says it is a unique human being. Do you believe that is a fact?
We know it is dependent on the mother for its survival up to a particular time in its development and science confirms that. Do you believe that is a factual statement?
We know that the newborn is usually dependent on the mother for its survival, especially when she is the only parent. If she neglects it then it can die.
Why is there value for the newborn to the extent that if the mother chooses to kill it she goes to prison, but the value is so diminished for the unborn with the woman's choice determining its life?
So can you say that it is good to kill other human beings?
Can you say that the unborn is a human being?
Can you say it is a unique human being, although undeveloped?
Can you say that valuing human life is GOOD?
I'll react to your answers.
The biblical God gives this command - You shall not kill/murder. God also says that every human being, both male and female is created in His image and likeness. Thus the biblical position is that we are different from animals in some areas such as our reasoning and ability to communicate and create on a level that surpasses animals. We are different on a relational level too. Besides this God gives us special worth. Thus, to kill another human being without good cause goes against His moral command. Killing the unborn is just such a crime.
Good on any subject has a fixed address because good has a specific meaning or it loses its meaning. That is the only way goodness means anything, other than preference and preference makes nothing good, just permissible to those who hold power forcing their likes on others.
Your position is that it's meaningless to state X is good or bad without an objective morality. I don't disagree, I simply state that we don't have any evidence for an objective morality. We have only our own opinions and assumptions to use as a basis, so until an objective morality can be shown to exist, then it logically is meaningless to state X is good or X is bad. This point makes sense of morality by acknowledging that morality is meaningless until we have an objective morality. You don't want to make sense of morality you want to justify morality having meaning. In short, morality in no way supports the existence of god, it simply shows a reason why people may want to believe in god.
If you can't state some things are good then anything can be passed off as good because there is no such thing. Now try living this way.
We have evidence on two front (off the top of my head).
1) We can't make sense of morality unless there is a fixed address for good and you can't make sense of it, but I can. What does that tell you?
2) You can't live with such an inconsistent view. Just count how many times a day you bring moral good or wrong into a conversation. If there is no such thing then you are not being truthful.
That is logical and reasonable evidence that brings your view into question. I can both make sense of morality and justify morality having meaning and I take you to the Bible to prove it is reasonable and logical to believe, realizing I can't force you to accept this because your presuppositions are going to stop you from trusting it.
News for you: The is no morality without God or this necessary being.
Let me remind you again of your statement: "Your position is that it's meaningless to state X is good or bad without an objective morality. I don't disagree,"
Do you want to live in an immoral or amoral world in which meaning is made up and meaningless because it can mean anything (no fixed address)? If so don't complain if someone ruthlessly kills someone you love for fun and they get away scottfree. After all, what does it matter in the big picture?