Mainly because the German tanks were the precursor to the modern main battle tank (MTB), making me bias to them. They had the vision and technology unparallel during their infancy. Not to mention their looks are more appealing then most of the other tanks during their time. This makes the romanticism of the German tanks more desirable for me anyways. It has nothing to do with the German war mongering and human injustices that they caused but it has everything to do with the romanticism of the first true main battle tanks and they way they looked for their time.
I tried to explain it the best way I could on how I feel.