Because we take the symbolic cracker in "remembrance"
Who’s your god, Ritz or Saltine?...Classy !!!
I don't recall Jesus tearing off his flesh for the first communion...He used unleavened bread like a Matzo bread...
Luke 22:19 ..And he took bread, and gave thanks, and brake it, and gave unto them, saying, This is my body which is given for you: this do in remembrance of me.
But, hey who am I to change what Jesus commanded us to do to celebrate his sacrifice...
The key phrase here is "DO THIS", whereby He commanded them to, as He had just done, transubstantiate bread and wine into His body and Blood.......in remembrance of Me is merely the reason that they were to do so.