Comfort Zone Bias
 

Psychologists have found that when people make important decisions, they often choose to stay in their "comfort zones"; that is, they prefer remaining in comfortable, familiar situations, rather than entering into new, unfamiliar ones. This tendency is often referred to as the comfort zone bias. When people are reasonably content, they often decide not to pursue a new opportunity, even if it attracts them and offers more advantages. Psychologists believe that the comfort zone bias exists not only because we have a natural preference for what we already know, but also because we want to avoid taking risks.