the idiotic purely imaginative speculative answers that are taken for gospel
Except that the scientific method is no such thing, of course. As has been explained many times, the scientific method is observation, the formation of a theory based on the observation, and then (so crucially) the rigorous testing of that theory with evidence.
And it all hangs together. We have numerous fields of science which all work together. And the scientific method works so well that it has brought us electricity, gunpowder, medicines, x-rays, tsunami warnings, visits to the moon, GPS sat-navs, the internet, the humble pair of glasses hanging on my face.
And that scientific method is applied rigorously in all fields of science, including geology and biology, to show that the earth is old, and that evolution is what has happened. (Neither is proven in the mathematical sense, but the conclusions are so certain, that we accept them as fact). You cannot, with any level of integrity, argue that the scientific method works in every area which doesn't contradict the bible, but miraculously stops working when it comes to areas which do.
Purely imaginitive speculation is what happens when you have an a priori conclusion you want to reach, and the scientific method doesn't reach that conclusion. A good example of this is speculating that a geological layer containing only terrestrial fossils and no marine fossils must have been laid down by a flood - now that, I'm afraid is purely imaginitive speculation.
Could there be any greater conceit, than for someone to believe that the universe has to be simple enough for them to be able to understand it ?