I've never celebrated any holidays or birthdays, should I actually give them a try?

I was raised strictly as a Jehovah's Witness, but I no longer want to follow that religion. Since I was raised that way, I never celebrated my birthday or any holiday. Do you guys think I should start celebrating them? Or is it simply to late for me,
I've never celebrated any holidays or birthdays, should I actually give them a try?
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