You clearly have no clue how we treat the Holy Mystery of the Eucharist. Even those of us who regularly take communion are cautioned to prepare properly, through fasting, prayer, almsgiving, confession, reconciliation, and even then to approach the chalice with fear and trembling lest we be unworthy and partake to our own detriment. Exclusion is not based on "membership" but on proper preperation, which can only be done in an "Orthodox" manner. The level of humility in Orthodoxy is off the scale for most outsiders. In a truly observant parish, there may be many who do not take Communion on a regular basis. I think that you would be greatly informed by spending time in an Orthodox church for Liturgy, etc and talking with a priest. The attitude and demeanor of the Orthodox faith is unlike anything you will ever have experienced and cannot be observed or learned indirectly. It must be experienced with all of the senses. This is why a popular invitation is "Come and see."