Here is another perspective: Traditions, Rituals and Celebrations are Important to Families
It seems to me that the WTS has developed regular meetings and conventions, etc., with the specific intent to create for JWs a kind of surrogate for Worldlyâ„¢ events like Christmas, birthdays and other holidays.
However, the kicker is that those surrogate events are focussed entirely on the WTS, not on the family the way traditional observances are.