Hey Pastors lets open the books, lets not make the House of God an open shame because we took on doctrine out of respect for a person. Now read below as I attempt to address the issue. Most believers use wine or grape juice for communion because of Matt. But I say unto, I will not drink henceforth of this fruit of the vine, until that day when I drink it new with you in my Father's Kingdom'. The key principle of justification being, 'this fruit of the vine', is the reason why most believers utilize wine or grape juice as the ingredient in the cup.
Lets examine the phrase, 'fruit of the vine'.
This phrase should not be taken literally for believers to use wine or grape juice because this scripture does not specifically indicate which ingredient, water, grape juice or wine, to use. Jesus often refer to himself as food, water and other elements to get a point across to the people. He did not intend for us to literally eat his flesh in order to become apart of him, or to literally drink the blood from his veins. The phrases were used as illustrations to reach a particular point with the people. The same holds true with this phrase, 'Fruit of the Vine'.