Why are there no miracles or supernatural events 'today'? Let's keep the focus of the discussion on the past 100 years. Who has moved a mountain?
The miracles performed were signs of the coming kingdom and the restoration that would accompany it. They offered a "taste" of things to come. They were not magic tricks to wow the crowds.
The same goes for the works performed in the apostolic age. The works of the apostles established their words. This was a time period when the scriptures were being formed.
Once the work of scripture writing was complete, there was no need for these acts. In fact
they would be counterproductive. This is why we no longer see miracles. They would be counterproductive in bringing God's people into the fullness of Christ. Signs and wonders would only serve to distract from the truth at this point. For instance, we know that the sign gifts caused major problems in the Corinthian church. They used their gifts to fuel their pride.
We all like the sensational. Everyone does. Most of the people who followed Jesus did so for the miracles He preformed in filling their bellies (John 6:26), but not for the message He proclaimed. They wanted things from God, but they didn't want God. We see that in John 6:66 "many of His disciple turned back and no longer followed Him." Signs and wonders don't do what we think they will. We incorrectly imagine that if God performed miracles today that everyone would believe and follow. Unfortunately, that's not true now as it wasn't then.
"Jesus said to them, “Very truly I tell you, unless you eat the flesh of the Son of Man and drink his blood, . . .
On hearing it, many of his disciples said, “This is a hard teaching. Who can accept it?”
Aware that his disciples were grumbling about this, Jesus said to them, “Does this offend you? Then what if you see the Son of Man ascend to where he was before! The Spirit gives life; the flesh counts for nothing. The words I have spoken to you—they are full of the Spirit[
e] and life.
Yet there are some of you who do not believe.” For Jesus had known from the beginning which of them did not believe and who would betray him. He went on to say, “This is why I told you that no one can come to me unless the Father has enabled them.”
From this time many of his disciples turned back and no longer followed him." (John 6)
We know from the text that in spite of seeing miracles many/most did not accept Jesus' teaching. Miracles can cause one to stop and take notice, but they can't make one believe.
No one lacks faith in Christ for intellectual reasons. If they did miracles could have fix it, but it's never been an intellectual problem it's always been a problem of the will.
Further scriptural proof that miracles don't produce faith is found in the story of the rich man and Lazarus.
“He answered, ‘Then I beg you, father, send Lazarus to my family, 28 for I have five brothers. Let him warn them, so that they will not also come to this place of torment.’
29 “Abraham replied, ‘They have Moses and the Prophets; let them listen to them.’
30 “‘No, father Abraham,’ he said, ‘but if someone from the dead goes to them, they will repent.’
31 “He said to him, ‘If they do not listen to Moses and the Prophets, they will not be convinced even if someone rises from the dead.’” (Luke 19:16-31)
