You also have better reading comprehension then most...
I, personally, only use smileys instead of typing out the feeling behind a post because most people are idiots and tend to fail to note sarcasm. I like to think it really isn't as hard as to detect sarcasm on the web as people say... but so many have trouble doing so I guess it's true.
A lot less people will go off on you for saying
"Man, you really are a dumb ****.
😛 "
Then just saying "Man, you really are a dumb ****. Just kidding. "