The purpose of God's miracles was to confirm his word. And they went forth, and preached everywhere, the Lord working with them, and confirming the word by the signs that followed. When that purpose was realized, miracles ceased. Satan is defeated. The truth is established.
Miracles are no more.
They are not needed. If miracles had remained after the truth of the gospel was certified to be of God, then many people would follow Jesus for the wrong reason. If believers are put under a glass and protected from sickness and hurting, many would come to Jesus for the loaves and fishes. If then ye were raised together with Christ, seek the things that are above, where Christ is, seated on the right hand of God. Set your mind on the things that are above, not on the things that are upon the earth.