First of all, there's never been a communist state. That's an oxymoron. Communism according to Marx is a stateless society, without socioeconomic classes or the need for money. There can be a socialist state, but not a communist one, according to Marx. The USSR was the Union Of Soviet Socialist Republics.
More, you are completely ignoring the fact that every single country that has ever identified itself as having a socialist, Marxist, centrally planned economy, has been systematically targeted in the most brutal, inhumane fashion by the United States and its allies. Economic sanctions and embargoes, blockades, threats of war, being bombed and invaded..etc. They're isolated and forced to become more authoritarian, politically centralizing power in an effort to survive. Your assertion that all of the politicians in socialist countries are living in opulence while everyone else in their country is supposedly living in squalor, better describes third-world capitalist-run nations, not socialist ones.
Are members of the communist party, especially during wartime, eligible for more benefits than the average citizen that isn't a member of the revolutionary party? Yes, because the members of a revolutionary communist party, of a socialist country under the encirclement of the United States, must sacrifice more of their labor, time, and their very lives to defend the nation. Anyone in the country can become a member of the communist party, however.
Whenever socialism isn't being sanctioned and forced into a state of war and austerities, it does very well. Even being besieged by capitalist-imperialist powers, like the United States, these countries survive. Your comment also assumes that socialism must appear in the world and take over capitalism in one quick swoop if it's an effective and valid economic system. Did capitalism appear on the scene and immediately replace slavery and feudalism? No. It took centuries. So why are you demanding that socialism take over capitalism immediately if it is an effective mode of production? Isn't that a bit disingenuous on your part? As we advance technologically, wage labor will be reduced and eventually eliminated, thereby eliminating capitalism. The result of that is socialism, and eventually communism.
Yeah right, that’s the communist apologists only excuse. You always say but, but, but we’ll get it right next time. You never recognize that the totalitarian misery for the proletariat is a feature, not a bug.
The only way communism would ever work is if you idiots somehow figure out how to turn humans into ants.