I think it was taken away as Vatican ll was taking its place. Pre Vatican ll people would kneel and one person, the priest, would distribute communion, imagine that!!

and I think it takes just as long for one priest to distribute communion as it does the 4 or so people it does now.
You make an excellent observation, although I don’t think you are aware of how excellent it is.
Let’s look at what you said.
One priest could distribute Communion to as many people before as it now takes 4 people to do.
Why is that?
I would submit that there is a reason, perhaps a bit more profound than you think.
It takes longer, because the process itself takes longer. One person receives. Then, if the next person does it correctly (and all too often they don’t), the next person steps up, and makes a slight bow to the Eucharist. This is specifically called for by the rubrics (they are in the GIRM, the General Instruction of the Roman Missal).
Why do they make a bow? Because they are reverencing Our Lord.
They then step slightly closer, and the priest (or EMHC) holding up the Eucharist says “The Body of Christ” (or if it is the Cup, The Blood of Christ). The person then says “Amen” (which means, “I believe”. They then receive, either in the hand or on the tongue. If in the hand, they normally take a step to the side, and place the Eucharist in their mouth. Then the next person steps forward and repeats the process.
What is the net result, compared to the way we did it before?
Well, before, people would stick out their tongue as the priest came in front of them, he would say in Latin, "The Body of Christ, stick the host on their tongue, and move to the next person.
Is the bottom line how fast Communion can be distributed? Is there any reason for going slower rather than faster? Is there a possiblity of more reverence, because of the bow, the response, and the consumption of the Eucharist in the “newer” way?
As one person put it effectively in another thread (again, I think without hearing what they were saying), previously the priest could whip down the line distributing Communion.
Is that what we want, for the priest to “whip down the line”?
One of the constant complaints I hear, and one with which I agree, has been the perceived loss of reverence with people attending the OF.
Then why, if receiving Communion this way (hand or tongue; I am not pushing one over the other) results in a slower process, and a slower process lends itself to more reverence, do people complain about it?
Is it just because they were so used to doing it the other way, that the other way wins over? Never mind that the other way all too often lent itself to the priest “whipping through Communion”?
Isn’t that really and truly putting form over substance?
NOTE: I am not proposing for EMHCs. That is not the question at hand; it is rather the very real observation that receiving this way is slower.
If going slower in and of itself gets us past the issue of the potential for the priest to “whip through Communion”, what is the complaint? It (the current process) is too slow?
As to my earlier comment about not doing it right, too often the person next in line makes the bow of the head before the person in front of them has stepped aside. The bow of the head is to be to the Eucharist, not to the back of the person in front of you.
But of course, bowing while the person receiving is still in front of you speeds up the process, doesn’t it? And isn’t that what its all about -speeding it up?
Or is it?