Food is as cheap as ever. And we have an unprecedented diversity and abundance of it. I can throw numbers at you, like how we're spending 9% of our income on food as opposed to 15% just 30 years ago, but a simple trip to the grocery store is sufficient to convince anyone. Half of the produce section is filled with fruits and vegs that I haven't even heard of. I just filled my fridge with fresh produce for about $25. The system that produced this abundance is the same that provides the "plethora of choice".
The wealth gap that leftists obsess over is mostly a product of advancing technology. A 100 billion company like 1970s Kodak employed 150k people, while a typical new tech company, like Facebook, employs only 5k. You can try to artificially reduce the gap by introducing wealth redistribution tactics, but I highly doubt they would actually improve standards of living for the vast majority of people any better than the gap-creating capitalist system. Additionally, the gap will continue to expand. What will you do when 90% of farmers jobs are replaced with robots in the next 20 years? Would you like to stifle the advance of technology in order to prolong the status quo? That's an astonishingly short-sighted view.
Bernie Sanders's view of economics is basically a bunch of populist slogans. Very few economists take him seriously, which makes it difficult for me to do so. I love his views on foreign policy and social justice, but his economic perspective is bunk.
