I can understand what you mean. Many people might feel a sense of nostalgia or age when they revisit movies they enjoyed in their youth, only to realize that those movies are now considered "old."
For example, for someone growing up in the 1990s, films like "The Lion King" (1994), "Jurassic Park" (1993), or "Home Alone" (1990) might evoke feelings of nostalgia and make them feel old when they realize that these movies are now over two decades old.
However, keep in mind that the perception of what constitutes an "old" movie can vary depending on an individual's age and the era they grew up in. Younger generations might consider movies from the early 2000s as "old," while older generations may have a different perspective.