Omnivores dilemma a term coined by Paul Rozin. Omnivores must seek out and explore new foods while remaining wary until they are proven safe.
Omnivores therefore go thorough life with two competing motives. Neophilia (an attraction to new things) and neophobia (a fear of new things). People vary in terms of which motive is stronger. Liberals score higher on measures of neophilia (also known as openness to new experiences) and conservatives on neophoia. These carried over to more areas than just food. It carried over to new experiences, people, and music.
The emotion of disgust evolved initially to deal with the omnivores dilemma.