@yogthos USSR was not only ineffective, authoritarian and oppressive towards its own citizens. It was also exploitative and imperialistic towards its neighbours, which I have personally experienced. This gives me many reasons to dislike it.
In market economy I have built my career, significantly improved my economic status and - most importantly - I'm free to go wherever I wish at any time, rather than being effectively a prisoner of my own country, as I was under communism.