I don't honestly.
To me humans are simply animals, animals who learned to speak and think and then thought themselves better than everything else and smarter and capable of leaving behind their vassal roots as mere beasts to achieve perfect society.
The truth is that communism by design ignores how humans are and only thinks of what it wants us to be, which I have seen dubbed as "human perfectionism" or the thought that humanity can be "perfected" or "fixed" through the progression of social, economic and political means until it has achieved a higher, pure state; this is ironically also what some Christians believe!
Most commies I have spoken to seem to believe this strange idea that humanity was "corrupted by capitalism" which as its first form took the shape of feudalism. This is why some claim they are "in the right side of history" because communism will advance human society beyond the evils of post-industrial capitalism, it is the supposed next step in human perfection.
I think all of these ideas are idealistic nonsense, seeing the world as one wants it to be instead of what it is plain and simple.
Humans are naturally greedy, and they care for their own like all other forms of life do. Feudalism wasn't borne as some sort of vile biblical ill, but instead was the inevitable conclusion to history and society up to that point, communism itself only exists because of the consequences of the industrial revolution. In my opinion no man controls history, nobody is ever "in the right side of history" because history doesn't have sides, it simply is.
Every dominant empire in history thought they were the culmination of human existence, meant to exist forever and advance humanity to an utopian future of wealth, peace and enlightenment; commies are just the latest crop of dreamers who think their way of living is gonna fix humans.
Don't get me wrong though, I don't think communism is flawed on paper, its ideas were thought of by incredibly smart people and it is the logical conclusion to a "fairest society". The thing is that I don't think it works on humans, maybe it'd work on robots or ants who don't value the self and only work towards the greater good, but humans are naturally selfish, very few people will sacrifice everything for complete strangers. I think this is why capitalism works and communism doesn't, capitalism was created naturally, through human behavior for hundreds of years. Communism was engineered in a lab by a bunch of economists who didn't take into account the human aspect of it, they just assume people will fall in line and the leadership will DEFINITELY NOT BECOME CORRUPT for the sake of the collective.
All of these ideas are arrogance, they are idealism, they are like blinding yourself and then claiming victory over the entirety of history and human evolution. It's like fooling yourself into believing bears have human-like intelligence and then going up to one and getting mauled 10 times in a row but then saying "it just wasn't the right bear!".