Eucharist; Communion; Lord’s Supper is a sacrament in which Christians share.
Let’s try to discuss our similarities and differences in this sacrament and means of grace given to us as Christians.
My first question: Do Catholics just partake in the bread and not the wine as laity? If so, why is that?
My parish only offers the species of Bread to the laity. In fact, all of the parishes I know of in the D.C. / Northern Virginia area do the same. The reasons for it are that
(1) consuming either is still communing with the fullness of Christ. Protestants take both because to them it is solely a symbol. We recognize the symbolism, but think it’s much more than that, so we’re not as concerned with making sure that the metaphor matches up just so, but with partaking in the Body and Blood, Soul and Divinity of Christ in a unique and incredible way.
(2) 1 Corinthians 11:27 is the Biblical support. “Therefore whoever eats the Bread **or **drinks the Cup of the Lord unworthily will have to answer for the Body **and **Blood of the Lord.” The Bread symbolizes His Body, in that it looks like flesh, as the Wine looks like His Blood, but in reality, the Bread is Body *and *Blood, as is the Wine.
(3) Offering the Cup to the laity was proposed by those who denied #1 and #2 historically - both Hus and Zwingli were vocal proponents of it, if memory serves. Had the Church begun to offer both at that time, it would have given the (heretical) impression that the Host alone wasn’t enough.
(4) Offering the Cup to the laity runs some risk of spilling the Blood of Christ on the floor. Without some overriding reason to take that chance, the Church didn’t generally risk it (at least in the West).
(5) The metaphoric and symbolic remembrance is still fulfilled by the priest’s actions. He mixes a small bit of water into the wine (remember what flowed out of Jesus’ side), he presents the two species separate, to signal the parting of Blood from Flesh at the Passion, and he breaks the Bread, another symbol of the Passion.
(6) In modern times, one of the major problems is that of ministers of Holy Communion. Properly, this is something which should be done by the priest or a deacon ordainarily. But in extraordinary circumstances, when there’s a shortage of priests and deacons, lay people can be used to help distribute. Offering both Host and Chalice makes the shortage and lines worse.
(7) Just as before, when many of the people pushing for reception under both species were heretics, many of those today who push for reception are trying to blur the line between priests and laity since they can’t have women’s ordination. Something like 80% of Extraordinary Ministers of Holy Communion are women. So by trying to introduce reception under both forms, a lot of the proponents are really trying to put women (often wearing white vaguely-clerical robes) at the front of the church distributing Eucharist and appearing priestly.
All of that said, there’s nothing innately wrong with reception under both forms. There’s just nothing wrong with reception (by the laity) of reception only of the Host.