Most people over the age of 10 have 4 to 6 dreams every night. Those numbers times 365 days in one year makes for between 1,460 and 2,190 dreams every year. We dream during REMperiods (which is when we have Rapid EyeMovement in our sleep) which can range anywhere from 5 minutes to half an hour long. In the course of one night this happens multiple times.
“Wait a minute!” you might be thinking, “I don’t remember having 4 different dreams in one night, and I certainly don’t remember having over 1,000 dreams this year.” The fact of the matter is, you forget between 95% to 99% of all the dreams you have. That may seem kind of high, but most of your dreams don’t really interest you enough to make you want to remember them.
Dreams are commonplace and don’t require enough concentration to force you to remember them. In that sense, they are similar to other routine actions you do throughout the day like driving or tying your shoes. You don’t remember most of the time you do those things either.