Are you a Christian according to the Gospel of Mark?
12 Afterward Jesus appeared in a different form to two of them while they were walking in the country. 13 These returned and reported it to the rest; but they did not believe them either.
14 Later Jesus appeared to the Eleven as they were eating; he rebuked them for their lack of faith and their stubborn refusal to believe those who had seen him after he had risen.
15 He said to them, “Go into all the world and preach the gospel to all creation. 16 Whoever believes and is baptized will be saved, but whoever does not believe will be condemned. 17 And these signs will accompany those who believe: In my name they will drive out demons; they will speak in new tongues; 18 they will pick up snakes with their hands; and when they drink deadly poison, it will not hurt them at all; they will place their hands on sick people, and they will get well.”
19 After the Lord Jesus had spoken to them, he was taken up into heaven and he sat at the right hand of God. 20 Then the disciples went out and preached everywhere, and the Lord worked with them and confirmed his word by the signs that accompanied it.
I am willing to listen to Christians who live the Gospel. However, the Gospel says that Christians can work miracles, so any Christian who fails to work miracles is clearly failing to live the Gospels.
And in reply to Will S., 1 Corinthians is NOT a valid counter-argument:
8 Love never fails. But where there are prophecies, they will cease; where there are tongues, they will be stilled; where there is knowledge, it will pass away. 9 For we know in part and we prophesy in part, 10 but when completeness comes, what is in part disappears. 11 When I was a child, I talked like a child, I thought like a child, I reasoned like a child. When I became a man, I put the ways of childhood behind me. 12 For now we see only a reflection as in a mirror; then we shall see face to face. Now I know in part; then I shall know fully, even as I am fully known.
The passage clearly says that prophecies are less eternal than love. It doesn’t release Christians from their obligation of performing miracles. If it did, Padre Pio would have been a blasphemer, not an example of Catholic faith.