> Among the physicists who do care about the different QM interpretations, it is my understanding that most would go with the Everett (AKA "Many Worlds) Interpretation these days.
In a small poll at a conference on the foundations of quantum mechanics in 2011, the Copenhagen interpretation was the most popular. This could differ from your definition of "these days" I suppose.
Well, I guess I can't argue with an unscientific poll, but it kind of boggles my mind that any scientist could take the Copenhagen Interpretation seriously.
I mean it builds the term "measurement", which is an undefined and unscientific concept, right into the laws of physics. Personally, I find this to be virtually nonsensical.
Both surveys are fascinating reads. They clearly give a sense that despite of the spectacular success of QM how far we still are from the final word in that field.
In a small poll at a conference on the foundations of quantum mechanics in 2011, the Copenhagen interpretation was the most popular. This could differ from your definition of "these days" I suppose.
https://arxiv.org/pdf/1301.1069.pdf
Update: a 2016 survey by different authors found similar popularity for the Copenhagen interpretation.