A master's degree in physics may not significantly enhance career opportunities compared to a PhD, especially in the US, where it can carry a stigma as a fallback for those who did not complete a PhD program. The value of pursuing a PhD largely depends on individual interest in research and the specific field and country of employment. In some countries, such as Canada and Sweden, a master's degree is often seen as a terminal degree, while in others, like Germany, a master's is typically required for PhD admission. Many students pursue a master's for various reasons, including professional advancement or as a stepping stone to a PhD, but not all are qualified or interested in continuing to a PhD. Ultimately, individuals should carefully consider their motivations and goals before deciding to pursue a PhD in physics.