From Donatella's last comments (in Reason 3) comes the next big reason to practice dream interpretation. She states in her comments:
Our intuitive, more secret and intimate parts, know before the other parts, those that are more “worldly”, and they ask us to intervene.
Donatella's comment brings us to the notion that dreams contain information that are greater than our own conscious mind can know. While we sleep, it is known that we continue to process information and to "learn" new information from what we have acquired. For example, if we learn A, B, and C, then while we sleep, the mind can make connections between them and all and come up with new information such as, A, B and C can be =Z! This new information (e.g. Z) lies within us and in the conscious mind, we may not know it.
The information that is "intuitive, more secret, and intimate" includes all the information that has ever been experienced by a dreamer; every person ever met, every book ever read, every stranger ever encountered, every emotion ever felt. During sleep time, the mind can assimilate, reorganize and more importantly, access this information at a level that the conscious mind simply cannot do.
The fourth reason to practice dream interpretation is to access this information that is at a level that cannot be accessed otherwise. To not do so, is to miss out on the intuitive and intimate parts of the self that are speaking out and asking for action to be taken.