Indeed, there are various pros and cons to all the leading interpretations. "Parsimonious" is often used to describe Everettian interpreations, although this is

Indeed, there are various pros and cons to all the leading interpretations. "Parsimonious" is often used to describe Everettian interpreations, although this is somewhat dubious as the leading advocates all have their own slightly different take on MWI (i.e. which quantities are "physical" and how to make experimental predictions - see [0] for more). MWI has always suffered with issues around probability. Why should we assign probabilities to branches, and why do those probabilities coincide with the Born rule. My belief is that it won't be widely accepted until this is resolved. There are lots of (typically complex) attempts to derive the Born rule using decision theory or the like. There's no consensus that any of these attempts are compelling, or likely to succeed in the near future. [0] https://arxiv.org/pdf/gr-qc/9703089 https://arxiv.org/pdf/gr-qc/9703089