The Bible is clear there is such a thing as vain worship, will worship, and ignorant worship and these are contrary to the will of God. So then, that would leave only ONE way of worship that pleases God, and that is worship done in spirit and in truth.
However you choose to slice it or dice it, we had better figure it out before it's Everlasting and eternally too late. We are to work out our own soul salvation with fear and trembling.
Therefore, my beloved, as you have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling; 13 for it is God who works in you both to will and to do for His good pleasure.
We are also commanded to sanctify the Lord God in our hearts, and be ready always to give an answer to every man that askes us the reason of the hope that is within us with meekness and in fear. (1 Pt 3:15)
14 Do all things without [d]complaining and disputing,[e] 15 that you may become blameless and [f]harmless, children of God without fault in the midst of a crooked and perverse generation, among whom you shine as lights in the world....
What is our light to do? It is to be sed to shine in the darkness to reveal the truth according to God's good pleasure, and that is in accordance with his word.
So, when people ask, why does the Church of Christ meet every Sunday? We are obligated to be ready to give them an answer according to God's good pleasure found only in the word of God.
When people ask, Why does the church of Christ sing without instruments of music? We must let our light so shine and tell them the truth as it is written in God's word.
When people ask, Why do you take the Lord's Supper every Sunday,? We have to let our light so shine and give them an answer that pleases God.
When people ask, Why do you take up money from the members every Sunday? We are obligated to let our light so shine and give them an answer according to the good pleasure of the truths only found in the inspired Word of God.., which is profitable for Doctrine, reproof, correction, and instruction in righteousness.
Earlier in that same letter we find that we are to be like-minded, having the same love, being of one accord, of one mind. And the only way that could ever happen is when we are teaching the same things and minding the same things and having the same rules. 1st Corinthians chapter 10.