I feel that they consistently fail to make a distinction between different types of "truth". Some things are absolutely, objectively true. That the Earth is round is an example of this kind of truth. I acknowledge that. But other things are seen differently from person to person. That stealing is wrong is an example of this. Care should be taken to distinguish one type of "truth" from the other.
I hold that moral questions should not be considered to hold absolute answers. I hold that no answers to moral questions should be considered "truth" in any way. Rather, they should be considered and referred to as "opinions".
Let's use emotionally charged examples to show what I mean.
Is murder wrong? The obvious answer is "yes"-at least, it is in most circumstances. The question is incomplete. There still might be circumstances in which murder is objectively good or objectively bad. So let's use a better example:
Were the Nazis justified in the systematic extermination of six million Jews?
Were the Nazis justified in the systematic extermination of six million Jews?
Obviously, your answer is "no". I share your sentiments. I consider the Holocaust to be one of the worst crimes committed in human history. If you do not feel the same way, I invite you to jump off a skyscraper and rid the rest of the world of your barbaric views.
And yet, I still hold that the question does not have an objective answer. If that sounds appalling then allow me to explain myself.
Did the Nazis themselves think they were justified? If the answer is "yes", if even a single Nazi considered the holocaust justified, then the answer to this moral question is subjective. In fact, all it takes is the capacity for someone to consider it justified and it becomes subjective. All of morality is like this. One cannot experiment on a moral question and find it true or false. It is open to variation from one person to another. All moral truths are in fact just opinions.
But the other kind of truth is objective. Scientific truth can be tested, observed and determined one way or the other. Probably. Scientists are always careful that nothing should be considered definitely true. But not because it is a matter of opinion. Opinion does not affect how true something is in science. But there is always the chance that the scientists have got it objectively wrong, or at least, objectively not quite right.
The Earth is shaped like a slightly squashed sphere. That is a fact. It does not matter if you believe the Earth is flat. A flat-Earther cannot walk walk to the edge of the world, not matter how hard they try.
The Earth is orbiting the Sun. That is also a fact (although actually, the Sun also orbits the Earth, but the Earth is so small that the Sun just wobbles a bit as the Earth zooms round once a year). It doesn't matter if you are a die-hard geocentrist.
The universe is probably about 13.72 billion years old. That is once again a fact. It will not be 6000 years old just because you might be a creationist.
Et cetera, et cetera.
Does God exist? Is it the god of the Bible (definitely not, I'm afraid) or some being that bears some aspects of the Biblical God? Or is it a Deist god, that made the universe, then let it do its own thing?
Whatever the case, I hold that this is a scientific question. Either God exists or he doesn't. Either he/she/it is like this, or like that. There is no middle ground. Claiming it as a theological question is just a way to dodge the issue. Trying to prove it one way or the other just by logic is fallacious.
We must do the scientific thing. When a scientist wants an answer, they look for positive evidence. They experiment. A being that can create Quasars and galaxies should leave a trace of its existence. If there is no physical, tangible evidence, then one should dismiss the hypothesis and formulate a new one.
There is no physical, tangible evidence for the existence of any kind of god, spirit, higher power or life force. The religious should, in my opinion, move on.