I can provide a semi-serious answer, the "crescent countries" provide far more business.
The emblems (Iran no longer used) were established in 1949.
I doubt anyone expected Israel to last long enough to matter. The Red Cross position, note the problem isn't their unwillingness to accept the Star of David, rather Israel's unwillingness to accept the Cross or Crescent
The International Red Cross and Red Crescent Movement has been working for some years towards a solution to the problems faced by countries which cannot use the emblems established by the Geneva Conventions.
These issues are complex and legal, but of relevance to all members of the Movement and to Society membership in many countries.
The process now in place for the establishment of an additional protective Emblem and the ability of National Societies to place within it certain indicative emblems has been the subject of careful consultation with all interested governments and National Societies. A consensus has emerged to create another emblem process, and to achieve this early this year.
This means that the conditions for the recognition and admission of Israel's Magen David Adom and the Red Cross Society of Eritrea will be set in time for both to become a full part of the Movement in the near future.
The Movement as a whole sees the resolution of the problems as a matter of great importance.