Actually you use totally flawed Hermeneutics. You consistently use John 6 in an attempt to prove you are actually eating the real flesh and blood of Christ claiming that is what Jesus said. Yet you stop with only part of what Jesus said. He went on to say other things.
John 6:35 And Jesus said unto them, I am the bread of life: he that cometh to me shall never hunger; and he that believeth on me shall never thirst.
Yet I see Catholics eating and drinking all the time!! Do you switch your "hermeneutics" at that point? Surely in your system of literal "hermeneutics" and interpretation you expect to never get hungry or thirsty again right? After all, Jesus said that in the same conversation.
You NEVER see a Catholic eating or drinking spiritually other than the Eucharist...That's exactly what Christ promised...that we'd be filled spiritually through the consumption of His Body and Blood....try it sometime, you'd be amazed at how His promise is fulfilled!!
So your theory is that Jesus changed his mind in the middle of the chapter? Your understanding of this is that people just meet Jesus once and then walk away because they are done with Him?
I receive the Eucharist precisely in order to come to Jesus, and be securely with Him, as He explains, and not be lost: not to gain His company for I have it securely already, but to keep His company because I am happy in it.