Actually, there is a reason to support one interpretation over another. Specifically that it's really hard to define what an "observer" is in the Copenhagen int

Actually, there is a reason to support one interpretation over another. Specifically that it's really hard to define what an "observer" is in the Copenhagen interpretation. The MW/Everett interpretation is what we have left if we remove the things we cannot define. There are also reasons to believe other interpretations. For instance, if you're religious, that could pull you towards the Bohr interpretation, since it may make it easier to assume that observation could be linked to an immortal soul. In any case, it's not natural to assume that below QM there exists a reality that is more similar to our instinctual world model than QM is. If anything, anything below it is likely to be even more abstract and hard to comprehend. Or it could be that the principles of QM applies all the way down, just as we've seen for the pieces of the SM that we solved after QM was first introduced (strong force, electroweak force).