Altars in today's Christian Churches Wonder why altars are not prevalent in Christian churches. It seems that a stage is used where all activities during the worship service take place, but there is no set aside place for the presence of GOD, this is the reason to have an altar.
Please comment.
Actually, more Christian Churches have altars than not. They are the focal point for worship in Anglican, Catholic, Lutheran, and Orthodox congregations. In the Old Testament Hebrew worship, from which a number of essential elements of Christian worship derive, the Altar was a place of offering, and in the Hebrew tradition, this meant places for animal sacrifice--sin offerings, thank offerings, and other sacrifices as detailed in Mosaic Law. For those Christian churches which retain altars, they are still the focal point of offerings, not animal sacrifice, but rather offering of our selves and those things with which God has entrusted us. Nearly all Christians have dispensed with animal sacrifice, seeing instead the crucifixion as the perfect sacrifice, made once for all, and all time. 

It is true that most Protestant traditions other than Anglican and Lutheran have replaced the altar with the communion table. The reason for this is that generally, those traditions, while still seeing the crucifixion as the one perfect offering, see the Last Supper, and the words of institution, as a sufficient remembrance of the perfect sacrifice.