Arent organic foods just a yuppie liberal prestige thing?

Definitely NO!!! Sounds like you have quite a prejudice against organic foods. Numerous research studies show organic foods contain significantly higher amounts of vitamins, minerals & antioxidants- up to 10 times more antioxidants! They also, of course, have much lower levels of pesticide residues and pesticides have been associated with increased risk of many serious illnesses like cancer... (cont. In comments).
All ages nonpartisan. All age demographics contain people who prefer organic foods for a variety of reasons. And I've known lots of economic and religious conservatives who prefer organics, plenty of liberals and yuppies who do not.