Dreams tend to age with you. While kids might dream about monsters in their closets, or unlimited candy, adults tend to dream about more stressful topics like deadlines, or job interviews. According to Live Science, studies have shown that people report their dreams differently at different stages of their life. A younger person might have dreams that are more vivid or life-like, while older people tend to have more complex or less emotional dreams. As we experience life and get older dreams tend to change. This is because as the brain develops, a number of factors influence our dreams. These factors are called sleep architecture and cognitive- emotional maturation. As people get older, their emotions, imagination, and memory develop , which is a crucial part of dreaming. 

As stated by Verywell Mind, as people get older and experience life, more and more moments from one’s waking life might be seen in their dreams. This could also be why dreams change. As a kid, you have only discovered a small portion of life. That is why kids have more vivid, life-like dreams.  This occurrence of seeing moments in your life is  common in adulthood and is usually triggered by a memory that they have lived in the past. 

When people are close to their death, they report having dreams about packing up to go on a trip, or seeing loved ones who have passed away. The studies of hospice patients say that these dreams are comforting and put them to ease. 

Dreams can change because of multiple different reasons. They change with experiences in life or when your imagination or emotions change.