errr... where do you get that? st Paul says the unworthy recipient is "guilty of body and of the blood of the Lord". The only way of a grievous offense against Christ Himself is if the true Body and the true Blood of Christ are really present in the Eucharist.
In fact take the writings of Justin Martyr to Primus (Emperor) Marcus Aurelius in teh 2nd century AD -- Christians were accused of being cannibals because we ate the body and drank the blood of Christ. Why would we be accused of this if this was not our theology? Why would the martyrs not say "aha, it's just a symbol" -- because to these Early Christians and to the majority of Christians today, this is REAL, the Real presence in the eucharist
were treating it as a drunken orgy where many went away hungry
errr... where do you get that?
1 Corinthians 11:17-22