The socialists in VE did not want to cause starvation or unrest in their country. They just relied entirely on oil (95% of GDP), and failed to diversify their economy. When the price of crude tanked, their economy went with it. This happened partly because socialism restricts free markets, partly because the oligarchy benefited from the authoritarian economic restrictions (like multi-tiered exchange rates), and partly from bad luck on the international oil market.
Aside from the political aspects, VE is a sobering example of what can happen to a wealthy nation during an economic crisis. Common medicines are nonexistent, a week's supply of food costs a life's savings (due to ~800% inflation), people are frequently robbed for their phones (the most valuable item an average citizen carries), police are often targeted for their firearms, motorcycles are used in many crimes, people do not go outside after dark, citizen mobs resort to vigilante justice and often kill innocent people in the process, looting and rioting is a daily occurrence, the military seized control of food distribution, stores are empty and closing, hundreds of thousands of Venezuelans line up at the Colombian border to cross and buy food... a grim situation at best. And all caused by a predictable fluctuation in oil prices.