I hopped out of being a good Marxist when I realised that there was absolutely no room for dissent. You basically are just a empty vessel for activist praxis. In other words, you do as you are told.

Also, there aren't really compelling alternatives to Capitalism that havent been extremely tested, with horrible results. IF they come up with a NEW system, that doesn't involve literally euthanising its dissenters, I would be into it.