"We have no space" - Every Hoarder ever... the ones that still have the amalgamator from 1990 stashed in a cabinet with 65 lab cases from 13 years ago.
It can be more understandable when one sees the dentist as a very small (and amateur) business owner. Scarred from years of expenses that may or may not have paid off. Seeing the pain of these expenses - and unable to decide exactly what to do next or who to believe. Control freaks have a hard time letting go!