Your biggest fantasy is walking away from the life (they think) you lead
A fantasy is something that is not true, but something that you want to be true or wish for instead. Dreams often include a fantasy component, and children enjoy fantasy because it primes the imagination. Fantasy can serve to help make a situation more pleasant, it can be used to get away from boredom or other negative factors, or it may be a way to feel better and live out unfulfilled dreams and goals. Many people fantasize about winning the lottery.