I don't know why. But I keep thinking: Is there anything better in this world -- than "Assalamu Alaikum!"
People, if I were you, which I am not, I will not throw away this very special and precious gift from God -- right from the pages of the Qur'an -- for any reason: time shortage; technology constraints; whatever.
Allah seems to say in the Qur'an, if you don't find anyone to say "Assalamu Alaikum!" to, then at least do that to yourself.
Say: "Assalamu Alaikum!" to yourself.
Fa-Sallimoo A'laa Anfusikum!
I don't know, nor can I think of, anything that will beat that!
If Allah had given Muslims nothing more, and if Muslims had nothing in their possession but Salaam, that would still be the most prized possession that anyone ever had in their hands on the face of this earth.