MUM:
I’ve said this elsewhere. My opinion of JWs not approving of the holidays is not ‘just’ because they say the holidays are ‘pagan’.. I think that’s a convenient surface excuse.
Everything has pagan origins including the calendar among other things. My experience in the JW religion led me to believe they don’t want you celebrating the holidays because they do not want you associating with your non-Witness relatives and friends. I believe they are afraid of you experiencing unconditional love and friendship from people who are not judging you.. So, I believe this is about isolating and separating the JW. This is likely the REAL reason.. I especially believe this to be true in my case back when I was in.
They are afraid you might not want to remain in the JW religion once you catch on!