Yes it can be seen as an easy thing to interperate but I could say the same thing about gravity so many people stick to the idea that they have solved the meaning behind gravity when yet it still is not explained entirely. My point being that if. You want to say gravity is explained as what goes up must come down isnt the way to look at it and if that can be said about gravity the same could be said about dreaming. We have explored more of space than our own brains and oceans there is still so many question that can be answered.The reason we dream is partially because it's a way to deal with things and it also helps keep you in check as well, it helps strengthen the line between right and wrong. Or at least for sane people it does. There really isn't anything else to it, it's rather simple and straightforward, not a mystery. ^_^