"Because Christ our redeemer said that it was truly his body that he was offering under the species of bread, it has always been the conviction of the church of God, and His holy council now declares again, that by the consecration of the bread and wine there takes place a change of the whole substance of the bread into the substance of the body of Christ Our Lord and of the whole substance of the wine into the substance of his blood. This change the holy Catholic Church has fittingly and properly called transubstantiation".
The council of Trent (1551)
The holy council declares for all Catholics an article of faith. Namely, that Jesus is truly present in the sacrament of the Eucharist under the appearance of bread and wine. It is for this reason that the church recommends that all the faithful receive Our Lord in a reverential manner. The current recommendation is that the faithful receive Our Lord on the tongue while kneeling and not in the hand while chewing gum and talking on a cell phone.
Stories of abuses are legion and draw the conclusion from a great many of the faithful that there is a crisis of faith in the church, specifically doubts as to the real presence. If the faithful truly believed that they were in the presence of Jesus in the Eucharist, the king of heaven and earth ,they would not show up dressed in torn jeans with gum in their mouths. They would not talk loudly in church and look all around. They would receive Jesus in a manner befitting his status.
It is for this reason that I receive Jesus directly on my tongue and not in my hands. After all, I have the hands of a soldier! My hands have not been consecrated and anointed with the chrism oil as the hands of a priest have. It is for this reason that I will not volunteer to be an extra-ordinary minister of communion nor do I think anyone else should.