The position has been well stated here. And, as a protestant pastor, I want to say that though I may disagree with your conclusions, I can actually respect it and do not wish to argue against it. (At least not at this time.

) Yet I do remain curious about a few events in my person life with respect to communion in the Catholic church.
Given the teachings of the Catholic church, why would it be that on more than one occassion I have been invited to participate in the sharing of communion with Catholic priests? Why, when I was not even yet ordained, but merely a college student, did the bishop of the diocese actually issue a letter to the catholic student body at our university saying that it was permissible for them to participate in our campus-wide Christmas communion service, with the only caveat that we offer the elements in the name of the Holy Trinity, “Father, Son, and Holy Ghost”? Why, at my first church, was I approached by the local Catholic congregation to see if I was willing to continue the tradition of a joint Christmas Even communion service between the two congregations? (Which, btw, we did.)