I feel like I understand communist theory pretty well at a basic level, and I believe in it, but I just don’t see what part of it requires belief in an objective world of matter. I don’t believe in matter and I’m still a communist. And it seems that in the 21st century most people believe in materialism but not communism. What part of “people should have access to the stuff they need to live” requires believing that such stuff is real? After all, there are nonmaterial industries and they still need communism. Workers in the music industry are producing something that nearly everyone can agree only exists in our heads. And they’re still exploited by capital, despite musical instruments being relatively cheap these days, because capital owns the system of distribution networks and access to consumers that is the means of profitability for music. Spotify isn’t material, it’s a computer program. It’s information. It’s a thoughtform. Yet it’s still a means of production that ought to be seized for the liberation of the musician worker. What does materialism have to do with any of this?
No, I do understand everything you just said, I just think it’s wrong and that a properly communist analysis would demonstrate that. Are you telling me that historical materialism is just one of multiple ways of arriving at communist conclusions?
Communism is usually associated with historical materialism, the theory that everyone here is trying to explain to you. However, there have been other forms of socialism before and after Marx. You might find interesting Henri de Saint-Simon and his theories, Paul Lafargue, or for another, more recent example of non-Marxist socialist, Karl Polanyi.
If you don’t believe in Marxism, that’s okay. But you need to study it first, and based on your original post, it might require some more time, patience, and reading.