A question I am sure everyone is wondering about.... :)

The other day my dear sister Molly and I had a very interesting conversation.  We were wondering if the famous ":)" will one day become part of punctuation and grammar.  The ":)" can change the whole meaning of a sentence. It can turn a rude comment into a joke like, "I hate you :)".  Or it can just plain lighten the mood to any sentence. Everyone uses it in text messages, on facebook, heck I even saw it on a balloon once! It wasn't your usual round yellow circle with a smiley face like the one above. It flat out was a colon and a close parentheses sign.So ridiculous! So my question is when are we going to start seeing the ":)" in books and text books? In the year 2020 maybe?