So, because you can't see God with your own two eyes, He doesn't exist? Because that's the logical extension of enslaving God's reality to our senses, and for the simple fact that "wherever two or more are gathered in my name, there I am with them".
No, he absolutely exists. He is present at the communion. We partake of him spiritually and not physically. If the experience were physical, then we would be physically immortal after the communion. We are not. We have received spiritual life through the body and the blood and that is the experience that is remembered through the communion.
God is not attempting to trick our senses by making us taste bread and wine when in fact we are eating the physical body and blood of our Lord. The experience is spiritual and not physical. We physically partake of bread and wine and we spiritually partake of the body and blood of Christ. We taste bread and wine because on the physical level we are partaking of bread and wine. As was stated earlier on this thread, Christ is the "host" and not the main course.
I think we may have beaten this horse to death. It seems it all started when someone made the claim that Catholics worship God in church and Protestants don't.