The leadership of James and Peter in Jerusalem showed commitment, seriousness and higher purpose. We see this in the Book of Acts. We see this in the miracles performed through the apostles after Jesus ascension. We see it in the dramatic works of the Holy Spirit.
But we also see how quickly sin raises it's ugly head with the story of Ananias and Saphira. And shortly thereafter with the Judaizers and the long struggle against the Nicolatians and the Gnostics.
As the decades roll by there are less examples of miracles to be written about.
About this topic..why did Jesus (or God the Father) do miracles.."Which is easier to say..Thy sins are forgiven you or rise up and walk? But so you'll know the Son of Man has the power to forgive sins I say to you, rise up and walk."
The miracles of Jesus Christ and later, those by the apostles were given by the Father as the evidence that Jesus Christ alone can forgive sins...the essential belief for those hearing the Gospel.
To come back to your question...why have we drifted so far from our roots?
In the first century Christianity had it's roots in Judaism...and needed to find it's own way; a way apart from the Law of Moses; apart from the Temple sacrifices..especially when the Father allowed the Temple to be destroyed about 70 A.D.
First century Christianity was neither settled nor secure. It's theology had yet to be plumbed..this alone has taken two thousand years to develop. It's hymns and music had yet to emerge fully from the Synagoge.
You'll note that the synagoges had only been in existence for some two hundred years before Christ's coming. ...They were an important pattern for the Church to follow. ie. How to worship without a Temple or sacrifice.
And how commited are these first century Churches? By the end of the century, John, writing in the Book of Revelation, reports Jesus' words to the seven churches in Asia. Not many get by without a warning or a swift rebuke.
Please don't misunderstand me. I agree; our churches today have little fire and many are even short on warmth. I just mention the above to offer a perspective about "the good old days"...they had their troubles, disappointments and poor performing members too.
Just my two cents. Glad for the chat.