This is a great question. It really, more than anything, shows how the RCC argument comes down to pragmatics. If it works to create unity, it must be true.
I will go along with this and say 2.
Let me ask you this now.
Here are your choices:
- You just read the Bible and come to your own personal conclusions.
- You read the Bible, but you have an infallible teacher (the Magisterium made up of sinners). When you have a question, you can ask him, and he’ll mail you a written response.
- Christ Himself meeting with you daily, giving you direction for the day?
#3? Great. Me too. But this does not make it true. We work with what we have. We don’t create something and use pragmatics to justify its validity.
Besides this, you assume that disagreement is a totally unhealthy thing. I think that you are wrong. I think that it is through disagreements and controversies that God makes us grow deeper. I don’t think that a church can grow in understanding when indoctrination of only one “valid” viewpoint must be adhered to without any true personal struggle. Therefore, doctrinal disagreements are heathly for the church because it helps us to grow deep. But it must be said, this does not make it true. If I was using this as proof for sola Scriptura, it would be purely pragmatic and I would be committing the same fallacy which I have just accused you and other Catholics of committing. But it does serve to illustrate how disagreements may be the will of God. Have you ever thought of that?
Therefore, all the disagreements about interpreting the Magisterium could be valuable if you would see them as such.
Michael