Emoji are inevitable because text - the basic communication medium on the Internet - is a very poor medium for conveying emotions. That's why first emoticons, and then emoji - the modern pictograms - happened.
[guiñando] [CARA_TRISTE]
Now, what the fuck did I say? Can you figure it out? What if I chose different words?
Text can convey fantastically deep and moving emotions. It just takes a more investment on part of both the author and reader than images.
We've been drawing faces and other emoticon-like symbols next to our words long before the internet. (Think informal writing like postcards or notes.) People have illustrated their writing for even longer. (Think medieval manuscripts, as an extreme example.)
Even canonically great writers don't (as a whole) limit themselves to words- they write plays that include stage directions, they write poetry that plays with layout and punctuation, they write songs that include melody and instrumental parts.
It's really only some forms of formal writing that limits itself to words to convey emotions.
If i was to explain my emotional state and intent on every other message i send, chatting would become rather laborious and having a fluent conversation much much harder.
Indicating that beside my contrary opinion my critique of your comment isn't a try to bluntly dismiss and educate but rather an act of wanting to partake in the conversation in a benevolent way takes me a good third of what I am writing. Or i could just :)
Generally speaking, using full stops is a sign that one is Very Serious; it's the textual equivalent of how, when someone is angry, they will close doors harder.
It's not surprising that new linguistic conventions cause confusion, but that doesn't make them something to deride.