Heh. You’ll find that this is a highly debatable subject. There are many who argue that it one should only receive on the tongue. Others who say that it doesn’t matter either way: on the tongue or in the hand.
There was a time in the early Church that it was acceptable to receive in the hand, at least according to St. Cyril of Jerusalem. * “When thou goest to receive communion go not with thy wrists extended, nor with thy fingers separated, but placing thy left hand as a throne for thy right, which is to receive so great a King, and in the hollow of the palm receive the body of Christ, saying, Amen” * (St. Cyril of Jerusalem, Cateches. Mystagog, V.1)
On the other hand (no pun intended), there is also the view that the Host ought to never be touched by unconsecrated hands. St. Thomas Aquinas states: “Out of reverence towards this Sacrament, nothing touches it but when it is consecrated” - Summa, Pt III Q, Q2 Art. 3
I personally will only receive on the tongue- there are too many chances for particles (which are still fully the Body, Blood, Soul, and Divinity of Christ) to stick to my hands, fall to the floor, etc. Plus, I really do not find myself worthy enough to receive, let alone touch our Lord with unconcecrated hands.
I would never assume to judge others on the way in which they receive, but for me personally, it is more reverent to receive on the tongue.