In Philip K. Dick's "Now Wait for Last Year," the use of a time-travel drug raises important questions about life and existence. The quote suggests that individuals may become so entangled in the past or future that they overlook the singular nature of their own life, which is constantly moving forward. It critiques the tendency to dwell on past experiences or long for what has already happened, emphasizing the importance of acknowledging the present moment.

This perspective serves as a reminder that time is linear, and each individual has only one life to live. Instead of waiting for opportunities to arise again or reminiscing about previous moments, one must focus on living in the now and making the most of the future that lies ahead. This theme is central to the narrative, prompting readers to reflect on how they approach life and the choices they make.