If the Eucharist is God, wouldn’t that mean you are eating God?
Yes, it does… We do it because Jesus decreed that is the manner he would use to dwell within us. God desires that close a union with us - to be right within us.
One can ponder why He chose to do it.
Why did He choose to provide His coming within us through tangible means that we could experience?
Why not only the spiritual indwellings? Ponder the differences.
Then it also is very profitable to meditate on why He chose bread and wine as the materials He would use.
It is also very rewarding to note passages in the Old Testament that seem to predict the Eucharist and other sacraments. Just a few samples:
Ps. 132:13-15For the LORD has chosen Zion; he has desired it for his habitation:
"This is my resting place forever; here I will dwell, for I have desired it.
I will abundantly bless her provisions; I will satisfy her poor with bread.
Ps. 104:15 and wine to gladden the heart of man, oil to make his face shine, and bread to strengthen man’s heart.
Jeremiah 31 11-12 For the LORD has ransomed Jacob, and has redeemed him from hands too strong for him.
They shall come and sing aloud on the height of Zion, and they shall be radiant over the goodness of the LORD, over the grain, the wine, and the oil,
and over the young of the flock and the heard; their life shall be like a watered garden…And of course the OT religious rituals and the manna.
If it’s Jesus, wouldn’t that be cannabilism?
No. Cannibalism is consuming mortal flesh (substance) where the appearances (accidents) of flesh are present tangibly. It is taken for the purpose of nourishing the flesh.
The Eucharist is consuming immortal flesh where the appearances (accidents) of flesh are not present tangibly. The Eucharist is taken for the purpose of nourishing the soul.
(Thought I’d get a little fancy and do some color coding.

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If someone took the Eucharist and destroyed it, would that mean they killed God?
No.
First, God/our risen Lord is immortal. That means He cannot be killed; death has no power over Him.
Second, destructive acts affect the sensible accidents of the sacrament, not the substance of the Eucharist. (The accidents of bread and wine are not changed into the body and blood of Jesus - only the substance of the bread and wine is changed.)
Third, when the Eucharistic species no longer retains the appearance of bread and/or wine, the sacramental presence of Jesus is no longer there — departs, you might say.
I think saying the Eucharist is God is being too literal.
Not if it’s true – which it is.
It is the flesh and blood of the** incarnate Lord**, the Second Person of the Trinity. He is God and He has changed the substance of bread/wine into His substance.