If many worlds is true, and every possible outcome of a system that can happen, happens...then this has a few strange implications....
1.) When you watch or read fictional media, for example, a film, you are actually watching another world that actually exists somewhere. Conversly, intelligent species of other worlds are all watching you! Do everthing! Because the possibilities are infinite! They see everything. Every soap you ever watched exists somewhere as a society! Freaky!
2.) Therefore, creativity is not actually creativity. It is coincidental awareness of another world, withinin our world. A mini replication of a system.
3.) Imagine your worst nightmare happening to you. If it can exist in symmetry, it exists. What's to say that your not in this nightmare now, and some guy is about to kick your door down and torture you by cutting off your limbs infront of you?... You have no power over what stream of possibility that you exist in.
4.) If you try to plan an event exactly, your chances are one in infinite. You can plan a generic event that involves an infinite numbr of sub events, but planning can only go so far. This is why plans never work. You are constantly fighting against severly stupid odds where the world is random and spontanious. The uncertainty principle.
5.) You are powerless to your destiny.