I would recommend you read the work of antitheist L,James and his theories that religion is due to both education and nascent intelligence.
I'll add it to my horrendously long list of things I still need to read
R. Dawkins is famous for his religion root of all evil hypothesis and has commented on the immorality of the religious in comparison to the non religious coupled with a belief in moral progress with the enlightenment.
Again, not how I read his comments. He thinks that religion had deleterious effects on human society, yes, but not that it's 'the root of all evil', and he has said on many occasions that evil is done for any number of reasons, religion being only one of them. On the Channel 4 show he appeared in 'The Root of all Evil', he is on record as having become involved before that title was decided upon, and having complained about it prior to it being broadcast.
As to the idea that the Enlightenment has heralded a noticable moral progress - I'd say it's a marker for the start of a change in the rate of progress, whether you actively link it as causitive is a bit more speculative.
Theists have by definition less smug self belief than antitheists and this would hence represent a symptom of delusion in the antitheist.
Really? How is it definitionally less smug to think that you are the point of creation as opposed to believing you are an insignificant speck on an unremarkable piece of rock in an unexceptional part of an unimaginably vast universe?
O.
In any case any delusion on the part of theists is irrelevant to whether antitheism is delusion....surely.
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