Marxism only has validity to me over other ideologies because it's a scientisation of philosophy and philosophisation of science. It should be an interface between the two that provides the extra contextual lenses for an observation or idea, while also challenging your initial perception of that thing to remove any idealism or vulgar materialism from your critique. Every idea I write has to make sense in the greater body of ideas I know to be the least-wrong interpretation of the world and it has to stand up to the peer review of other communists doing that thing. While Marxism isn't a science in itself, like horticulture or ecology I'm drawn to it because it's the most interdisciplinary attempt at applying a scientific worldview to a wildly complex system. I'm always considering the extra intersectional angles and checking to see that what I believe as a Marxist is what I believe as a scientist to refine both.