Not sure what you mean by no real disciples as we are all disciples of Christ working through God's power and authority just as the twelve did as we, like the twelve have the indwelling of the Holy Spirit that works in us and through us.
The problem with today's Western churches is that there is a general skepticism concerning the supernatural, which does not exist in the third world. In African and Asian countries, they are very aware of the supernatural through their paganism and witch doctors. When the gospel is preached, the signs and wonders do follow, because when the people hear that God can and will heal the sick and release them from demonic power, they believe it, and it happens. This is why we hear more of miracles in third world countries.
Our Western churches are corrupted by "enlightenment" philosophy that follow Plato and Aristotle, who taught that the only reality is what we perceive through our five senses, and that anything supernatural is not real. This philosophy gave rise to Cessatonist teaching, which says that the supernatural gifts of the Spirit were just for the Apostolic period and when the canon of Scripture was established, miracles and Spiritual gifts weren't needed any longer. This form of unbelief has so pervaded the general churches, that the Holy Spirit cannot do much in the way of miraculous, in the same way that Jesus couldn't do any miracles in His home town of Nazareth.
Even when there are miracles of healing and deliverance, they are largely explained away by the critics. Also, the Prosperity gospel that Kenny Copeland and his brood of thieves and robbers (those who depart from the true gospel of Christ) have so corrupted the Charismatic movement, that many in churches have lost faith in signs, wonders, and miracles accompanying the preaching of the gospel.
So, in general, the Church is its own worst enemy when it comes to believing that signs, wonders, and miracles do follow the preaching of the gospel in today's world.