Heh that's what gets me most also. Not just the watchtower but with everybody pretty much. Hell, trinity, so many other things plus the stuff the WTS puts out is all man's interpretation of different things.
How can we elaborate birthdays from a few crap scriptures, and not celebrating birthdays cause the view of the bible maybe that death is greater than birth and that we get presents anyways. I have never had a day just for me, ever.
So I dunno that's where all secular religion gets me. It's man's interpretation of it. I'd just live it to what it says, not the extra add-ons that change every year.