Just to remind the thread about the institution of the Eucharist, and to show its provenance in the early Church.
From Luke:
And he took bread, and when he had given thanks, he broke it and gave it to them, saying, “This is my body, which is given for you. Do this in remembrance of me.” And likewise the cup after they had eaten, saying, “This cup that is poured out for you is the new covenant in my blood."
If any corroborating evidence were needed, St Paul speaks about the Eucharist in Corinthians.
And when he had given thanks, he broke it, and said, “This is my body which is for you. Do this in remembrance of me.” In the same way also he took the cup, after supper, saying, “This cup is the new covenant in my blood. Do this, as often as you drink it, in remembrance of me.”
For as often as you eat this bread and drink the cup, you proclaim the Lord's death until he comes. Whoever, therefore, eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty concerning the body and blood of the Lord.
Which I quote at length because it shows that the Eucharist was celebrated in the extremely early Church.
Christ commanded us to eat His Body and drink His Blood: He also commanded us to re-enact the Eucharist.
It is fun to dress up and play pretend, isn't it?
Now this is just shameful. You've likened Christ's Sacrifice on the cross - the sacrifice of the Lamb reenacted faithfully by His Church - to a pretence; to a game of dress-up.
But even as you pour scorn upon Christ's words at the Last Supper you are echoing part of His Passion. The soldiers literally played dress-up with Christ: they crowned Him with thorns and clothed Him in garments of derison.