You're wrong on two key points:

1. USSR and Nazi Germany only made a nonaggression act after other Western countries did because Western powers purposefully did not invite the USSR. It was a way to try to protect Czechslovakia and Poland since the Westerns were simply giving up Central Europe to the Nazis. You can read more about it here.

2. The famine in the USSR was not a genocide. That is Nazi propaganda. Read about it here.

I don't smoke because it's bad for my lungs.

That said, I'll leave you with a quote from Thomas Mann,

To place Russian communism on the same moral level with Nazi fascism, because both are totalitarian, is, at best, superficial, in the worse case it is fascism. He who insists on this equality may be a democrat; in truth and in his heart, he is already a fascist, and will surely fight fascism with insincerity and appearance, but with complete hatred only communism.