Here is Minute Physics take on the 'ever popular' Many Worlds/Parallel Universes picture of quantum mechanics. While this view may make it easier to digest certain conceptual issues of QM, it also creates a whole slew of other issues that I find hard to swallow. As is the case, you might solve one, while creating other set of messes.
As an experimentalist, until there is an ability to test one versus the other, I'll stick to the "Shut up and calculate" view. It is less stressful! :)