For a consistent world-view. Next, you'll ask me why I think it needs to be consistent,
Please don't put words in my mouth.
What i was actually going to say is that it is consistent. I am consistent in my view that some things can be empirically proven and some things cannot, and I have no more problem applying different 'rules' to my thoughts on those different areas of experience than I do with not trying to play snooker by the rules of cricket.
it's the requirement that a scientist uses for everything else that makes up the world
See my previous responses. I
am a scientist, and I recognise that some parts of existence don't happen to fall within the realms of science, at least not yet, and not in terms of having supported answers. To use a slightly less contentious example than religion, the question of alien life springs to mind. We have no evidence for alien life. Absence of evidence is not evidence of absence, however, therefore the question 'is there alien life in the Universe' does not have a scientifically supported simple answer. I recognise and accept this and will gladly point it out to people when asked. If i am asked if I
believe there is alien life, however, I'd have to say honestly that yes, I believe there probably is. I couldn't tell you why. Maybe it's just a romantic notion and I like the ideas of shows like Star trek being a reality some day. The point is that it's a question to which my rational mind cannot be answered one way or the other but irrationally I do believe it. Now why do I need to justify that belief when I have already conceded that there is no satisfaction of a burden of proof to provide a rational answer one way or the other to the question?
In my view, what you are asking me is the same as asking why we teach people that our planet is billions of years old. The age of the earth doesn't affect the life of your average person, yet we are explicitly telling them what to think, possibly against their belief that the earth is only thousands of years old. For this reason I'm having so hard time to see why a belief doesn't need justification.
But that's nothing like what I am talking about. That's a question where we do have a satisfied burden of proof that says the Earth is billions of years old, and we teach it because of that. The belief that the Earth is younger than that requires a lot of empirical evidence to be discarded or argued away. The belief needs justification in the face of mountains of evidence that it is incorrect.
What I am talking about is things that don't have any evidence one way or the other, and so the burden of proof question can't be met anyway. If I can't draw a rational conclusion then all I have are irrational beliefs, and I don't see why I need to justify them to anyone when I have already conceded their irrationality.