Why did Hitler despise Austria so much?

The Habsburg empire had been demolished long before Hitler came to power. ___ He hated the fact that it was consisted of many nations- Spain, the Netherlands, Austria, most of Germany- and it was very loose and heterogeneous(the only thing that kept it together was the iron fist of Charles V- and Catholicism was a common denominator as well). Adolf Hitler prized nations that were strongly united and ethnically/politically homogeneous- that's why he sent the Jews and Poles, as well as political dissidents, to the concentration camps. ___ Well, what he knew and hated was the Austria-Hungary of his youth, not the Holy Roman Empire. In other Words, Central and Eastern Central Europe. To introduce the Spanish connection and Charles V is simply very misleading. That connection was severed in 1556! I initially mentioned that, but a certain someone chose to blissfully ignore that factoid.