If you do not believe these things are for today, is it any wonder why you do not see it?
Today, it would be the same. If indeed unbelief was stopping miracles, then that would be contrary to the teaching on the gifts of the Holy Spirit. The Bible does not say that those gifts could be prevented from being manifested simply by unbelief. At the same time, the Bible makes it clear that signs, wonders, and miracles were for a limited purpose, and a limited period. And that is while the Gospel being preached by Christ and the apostles was authenticated by God.
Today, with a complete Bible, God wants people to believe the Gospel because He has given us a record of His Son. Now the Gospel is the power of God unto salvation to those who believe. And the Holy Spirit uses the Gospel as the "seed" from which the New Birth comes about.
If miracle workers were to be active today, they would be in EVERY CHURCH, regardless of whether it was Pentecostal or not, and regardless of who believed and who did not. It is God who would be placing miracle workers in all the churches if He still wished to use miracles to authenticate the Gospel.
In any any event, supernatural prophecies, tongues, and knowledge have all passed away. People can either believe the Bible or disbelieve it. As Jesus said, if they do not believe Moses, they will not believe though one rose from the dead.