For the sake of understanding, I believe this is worth repeating. Anyone who has experienced a miracle in the name of our Lord, Jesus Christ, is able to say by the Holy Spirit that miracles do occur. These people do not look for miracles, they serve God, and God uses them. The same hold true for signs. Those who believe Jesus Christ do not look for signs as did thos hypocrites who asked Him for a sign to prove Who He is, the signs come because they do not ask, but they are given. As for visions, again, anyone who has had a vision has received it from above, though not petitioned, they simply are given.
Now no one can say by the Holy Spirit that miracles do not occur, nor signs, nor visions. No one can limit God's will to an opinion. All of us who are saved by the Blood of Jesus Christ are open to whatever God may want for us regarding service to Him. Again, that sinful generation asking for a sign was an unbelieving generation (flesh) not those who believe. Also, again, those who experience the power of God only do for the glory of God Almighty in the name of Jesus Christ. Signs and wonders are not demanded to prove God, they are given to those who serve God, without asking.