I think Prussian culture was such that WWI would have occurred with or without Wilhelm as Kaiser. I also think it would have happened, even if Vicky and Fritz had lasted many years as Kaiser and Kaiserine. Prussian culture was so obsessed with nationalism and militarism, it was practically unavoidable. The power of Royalty was declining in Prussia, as it had already declined in England. Wilhelm, in fact, did not want war in the end, but accepted it after he could do nothing to stop it. His power was therefore not completely absolute. His authority was at times superseded by his Generals during the war. There was a duality to his person. He was brash, wanting conquests, but not the necessary conflicts to acheive them. I think Churchill said something to that effect about him. That "softer" side of him, I'm sure, was Vicky, by nature or nurture. Can you believe he used this as an office chair? Never would have occurred to me to make a chair like that!