I think emoji are important and underrated.
We know communication is 80% non verbal, and that means a huge part of the information we try to transmit and share are not perceived. Emojis, used in a "correct" way, without redondancy could implement the message we are sending. I use them to give a "tone" of ehat I am saying.. a thing is not everyone give the same meaning to same emojis, so the message isn't vlear of course.
Hope I was able to express myself ๐ ๐ฅฒ