Dolto, I was speaking personally, for me...god is an irrelevance and that being so makes for greater peace of my mind. I absolutely agree god should be irrelevant for all just as it is in scientific research. However science does not claim to supply existential comfort, which belief in a god does.
As for 1897 and alternatives to divine origins for the universe--- perhaps you have overlooked that Darwin's evolutionary bombshell exploded back in 1859? The thinkers of the day especially TH Huxley and the like, recognised evolution denied the need for a divine creator and the idea has continued filtering down ever since.