Tradition is valuable because it is how mortal beings with limited understanding can at least partially grasp and understand God.
Tradition is valuable because God imparted authority to the Church, made up of humans cooperating with the Spirit of Truth.
He didn’t have to. He didn’t have to be born of the Ever-Virgin Mary. He didn’t have to become Incarnate.
But He chose to. That was God’s decision.
We certainly don’t understand God or His ways.
We follow the Church and Her teachings because Jesus Christ wanted the Church to be the means of salvation of souls. And He promised Himself the Church will not fall.
I cannot imagine Jesus establishing the Church and saying, “Oh actually – never mind. The authority to forgive sins? Yea, I’m taking it back.”
Faith is not something to rationally convince ourselves of. In fact, I doubt we even can rationalize and understand the Holy Trinity, Incarnation, Resurrection, etc.
Tradition (and the eachings, customs, liturgy, doctrine, Sacraments) is important because that’s what Jesus chose to do.
Scripture doesn’t talk about abortion or gay marriage or transgender ideology or communism or even uses the term Holy Trinity.
So are we free to believe whatever we want?