You do now. Just for the record.
I, like Douglas Adams, hold a strong atheist position: There is no God. Period.
This is not an "opinion" or "belief", anymore than it's an opinion or belief that the sun and planets do not revolve around the Earth.
Grammatically, it is not an opinion. Grammatically, it is a bald statement of fact. But since it cannot possibly be supported in the same way as "the sun and planets revolve around the Earth" can be, it
ought to be expressed as a belief. Just because you hold that belief very strongly, it does not follow that you can justify turning into a fact.
But....the precise situation depends on exactly what
you mean by "God" in your statement.
If you mean some specific conception of God, then it may well be possible to support the statement. e.g. if God means "The God of Christianity, as described literally in the Bible." then your statement is supported by scientific fact. Either the biblical account of God is literally true OR darwinism is true, but they can't both be true. Therefore the empirical facts supporting darwinism also support the claim that "there is no God".
However, there are many other conceptions of God, even within Christianity. There are a great many other conceptions of God outside Christianity. Of these, there is no shortage of conceptions of God which do not contradict empirical science
at all. If you allow the word "God" to stand for those conceptions of God (and you have not specified that you won't allow this) then your position is untenable. You can legitimately claim that you
do not believe in the existence of any sort of God but if you try to claim that it is a FACT that nothing resembling any of those conceptions actually exists, then you are in serious trouble, because you've lost the ability to tell the difference between facts about empirical reality and purely metaphysical/religious beliefs. That's neither critical thinking nor skepticism. It's just
dogma.
We know enough about the universe at this point to positively discount all theories of God, unless (as discussed above) they are framed so weakly as to be empty, in which case they are not theories at all.
Absolute nonsense. You have no means of supporting this claim. But please do try.....
Here's the nub of it:
1. Notions of God have their origin in myth, religion, and legend.
Apart from the ones that have their origin in philosophy and direct human experience.
2. As physical theories about our universe have advanced, corresponding God-centered ideas have retreated, and the rational/material worldview has won out in every case.
Ah, so the turkey which learns that every time the farmer's wife comes down the path at dawn, it is going to get it's breakfast, is justified in believing that whenever the farmer's wife comes down the path at dawn, it's going to get fed, yes?
Your view is oversimplified, blind to the well-documented weaknesses in the materialial worldview, and critically dependent on invalid inductive reasoning.
3. There is no coherent core God-theory with which all non-marginal theists will agree.
There is no coherent anti-God-theory with which all non-marginal atheists will agree. Try finding me someone who (completely) agrees with
you, for example.
4. One can discard the God theory entirely and not lose one iota of explanatory power.
Which "God theory"?
6. There are perfectly rational explanations for why human beings should believe in God despite its non-existence.
Equally, there are perfectly rational explanations for why human beings should disbelieve in God, despite God's existence.
You are beginning to sound like lifegazer. "Use olde Englishe! It's so much more convincing!"