**Because the eucharist ritual is a human construct.**
I don’t know if I will ever understand how non-Catholics take the Bible SO literally, and yet they do not believe the words of Jesus Christ at the Last Supper.
“This is my Body.”
“This is my Blood. Don this in remembrance of me.”
I actually feel very sad that you do not believe Christ’s words!
and you do that how often?
“Don this” could mean to wear it. How often are “we” supposed to do this? There was only one “Last Supper” after all.
Don't be sad. Spiritual things are spiritually discerned.