There are many doctrines in worship of God.
God has his own method and what he expects from us. We cannot deny the way that God wants us to serve him and expect him to delight in such ways. God is not answerable to any of us. We are answerable to him. He is our God. We are just his subjects and those who are his followers, worshippers, we must be ready to obey him in everything we do.
When the Lord Jesus Christ came to the earth, he offered himself unto us. That was humility. The humility there is that now he was a creator. He submitted himself to this creator to baptize him. So he did not just teach us that we should submit to ourselves but to accept that standard. He did that to teach us that we are not in way bigger than his principles.
If he being God humbled himself to accept baptism, then why should we not accept everything that he has committed us to?
So baptism is an important aspect of the teaching of Jesus Christ, which every Christian must obey so we are to be baptized.
Just as our Master taught us, there is no other way of being happy than to obey the high commandment. Obedience is better than sacrifice. In order not to live out of rebellion, we must keep to the commandment of God always.