Well, I agree, not all tradition is bad. Some is quite edifying. However, the church in general, both Catholic and protestant, is filled with things that are placed on people that the Lord never mandated through scripture, for no other reason that "it's always been this way." Frankly, it has NOT always been this way . This is simply an undeniable fact.
Of course, I'll be the first to admit, I don't know everything! In fact, not much, probably.
1Co 13:12 - For now we see indistinctly, as in a mirror, but then face to face. Now I know in part, but then I will know fully, as I am fully known.
"...filled with things that are placed on people that the Lord never mandated through scripture..."
OK. Now we're back on the same page by recognizing that there is "the Tradition".
The exact date of the Birth of Jesus Christ is very important to Christianity. We know this because St. Luke the Evangelist fills his Gospel with details that have but one purpose, to establish it for all time. So don't say this is not important or not mandated.