a fool's paradise

The phrase "a fool's paradise" refers to a situation or state of mind in which someone is content, happy, or satisfied with an illusion or false sense of security, regardless of the impending or existing problems, obstacles, or negative consequences. It implies that the person's blissful ignorance or foolishness prevents them from recognizing the reality or drawbacks of their situation. In other words, they are living in a delusion or fantasy that makes them oblivious to the actual challenges or risks they are facing.