What doomsday theory?
I'd say the world is this way but it does go on one way or another.
You realize that to achieve your goals, it would mean that the individual will must be completely sacrificed, your meals provided to you by some kind of authority, every belief you have memorized and unquestioned. And in the end, someone has to actually maintain that organization that coordinates these efforts. The ribs for the BBQ didn't fall out of the sky. Someone had to grow that thing, kill the cow, cut it up into pieces, freeze it, transport it over many miles (all cold) and then have it stocked at a local market.
You must live in the same kind of house.
Have the same sort of job (since even if you get paid the same, you'd get things like "how come he's a doctor and I'm a janitor??")
Have no parents - since every parent has a different level of skill, it would give those with more competent parents an unfair advantage. Also, parents may have a different view of how the world should be run and therefore it is imperative that children be raised by the state authorities at the earliest possible age.
Have the number of children be assigned through lottery - since parents can't see their children who'd want to go through the pain of having kids only to lose them immediately? So a lottery must be put in place where mating couples are assigned how many children they must produce.
Have no marriages - since some people have a happy marriage and others do not, this is unfair and can lead to jealousy and conflict. Therefore the authorities should assign random people to pro-create.
Your mating couple will have to be from time to time the same gender as you. Discrimination against homosexuality? Never! Not if everyone parttakes in it.
If you look at it, all Communists were faced with these exact problems and found out they needed to be addressed one way or another. No Henderson, it's not that they were not "true Communists," they were Communists who took the words out of the book and put it into the real world only to realize what it required. By then they had already gone too far to go back and ended up making death camps as that is the only way to really curtail individual will.
Cambodia is a good example of a case where they took it all the way.
Same housing : Yes, if you all live in thatched huts in groups, your housing is about the same.
Same job: Being peasants. The surefire way to create what you need to survive (food) and have a job. Also, anyone can learn to do it in quick time.
No parents: Don't think they were able to get rid of marriages although they just didn't honor them much. But children were taken from their parents and were educated to go against their parents. Actually this was the case in North Korea as well. Although they didn't separate them from their parents, children were encouraged to spy on their parents and this led to a lot of arrests and executions.
If you are going to wish for or think of something, you better think it through pretty well. If you're a Communist at heart like you state, you better know everything that Communism is. Not only what it states it is, but why it is that almost every group that adopted Communism as their official state ideology and political system ended up the way they did.
Actually you remind me a lot about this one guy I knew in college who said something about water needing to be free. You can read about it
here.
Though I have a feeling I'm wasting my time a bit here with this thread because obviously thinking is far beyond your capability.
I happen to live in a society where a large degree of sameness is required/expected. It's nothing like you think it is.