Carico, you declare that you have lots of books. Well, so do I, but that really doesn’t matter. What matters is the evidence and the reasoning you bring to the matter. For example, have you looked at the budgets for military spending as a percentage of GDP in the Western democracies during the 1930s? I don’t have those numbers off the top of my head, but as I recall they reached minimum around 1933 and steadily rose thereafter. That doesn’t jibe with your “asleep at the wheel” hypothesis. Or what about the existence of the US carrier force BEFORE Pearl Harbor? The Lexington and the Saratoga both date from the 20s, but the Enterprise keel was laid down in 1936.
Or consider the Maginot Line. Work on it was begun in 1930 and continued all through the 1930s. If the French were naive about Hitler, why did they spend such a stupendous sum on static defenses at the German border?
I could dig out some more facts but I think my point is clear: the Western democracies had no illusions about Hitler. They recognized the threat he posed and they prepared for war even as they negotiated for peace.