Marx was a resentful and hateful person. Socialism/Communism is all about 'getting even'.
Marx also lived on the charity of others...he didn’t work, but lived off of his wife and his wife’s family and Engels (who had some money). So Marx did okay...but it is thought that at least one of his children died of malnutrition, because apparently the money was to support him in the lifestyle befitting a hero of the people (including hiring cooks and housekeepers) but not enough for his dependents.
Marx and his wife and children, and his mistress and her child lived their entire lives off the largess of the Engels family.
His writings are his rationalization for their sloth and envy.
These adults allowed three of the younger children to die of neglect.
And what most liberals do not know or will not acknowledge: Marx was a virulent racist.