Why is simulation often called a technique of last resort?

Simulation is often termed a technique of last resort because it can be resource-intensive, requiring significant time, computational power, and expertise to develop accurate models. Additionally, when other analytical methods or straightforward solutions are available, they are typically preferred for their simplicity and efficiency. Simulation is usually employed only when the complexity of the system or problem cannot be adequately addressed through simpler approaches. Thus, it's seen as a fallback option when more conventional methods fail to provide satisfactory insights.