MEM:   More to the point, no true Marxist embraces primitive life over agriculturalist slavery or that over industrialism. The record -- tragically in fact -- demonstrates that Marxists prefer industry to farming.
ET:  Marx and Engels did (when they wrote The Communist Manifesto). Is Marx a true Marxist?

The bourgeoisie has through its exploitation of the world market given a cosmopolitan character to production and consumption in every country. ...  The bourgeoisie has subjected the country to the rule of the towns. It has created enormous cities, has greatly increased the urban population as compared with the rural, and has thus rescued a considerable part of the population from the idiocy of rural life. ...  The bourgeoisie, during its rule of scarce one hundred years, has created more massive and more colossal productive forces than have all preceding generations together. Subjection of Nature’s forces to man, machinery, application of chemistry to industry and agriculture, steam-navigation, railways, electric telegraphs, clearing of whole continents for cultivation, canalisation of rivers, whole populations conjured out of the ground — what earlier century had even a presentiment that such productive forces slumbered in the lap of social labour?
The Communist Manifesto (passim)

Moreover, one should distinguish between "Marxism" and "what Marx believed"; for example, shortly before he died in 1883, Marx wrote a letter to the French workers' leader Jules Guesde, and to his own son-in-law Paul Lafargue, accusing them of "revolutionary phrase-mongering" and of lack of faith in the working class. After the French party split into a reformist and revolutionary party, some accused Guesde (leader of the latter) of taking orders from Marx; Marx remarked to Lafargue, "if that is Marxism, then I am not a Marxist"
http://en.wikipedia.org/wiki/Karl_Marx