Why utility is difficult to quantify?

Utility is difficult to quantify because it is inherently subjective, varying greatly between individuals based on personal preferences, experiences, and circumstances. Additionally, utility can change over time and in different contexts, making it challenging to establish a consistent measure. Economic models, while they attempt to simplify and quantify utility, often rely on assumptions that may not capture the full complexity of human behavior and decision-making. Finally, the interplay of multiple factors influencing utility, such as emotions, social influences, and cultural backgrounds, further complicates any attempt to assign a universal value to it.