Text Speak: What Did You Just Say?

Call me old fashioned.  I still have a flip phone, an iPod, a GPS, and a digital camera.  Not all in one device.  I have four separate devices.  It may surprise you to hear this, but I use my phone to call and text people.  And that's about it, other than occasionally using it as an alarm.
Call me old fashioned again.  When I text, I use proper grammar, punctuation, and sentence structure.  I capitalize letters, use Oxford commas, and, yes, I spell out every single word.  No silly acronyms from me.  Not even an LOL!
As much as I love writing, I often have difficulty expressing my feelings and opinions in a way that my readers can understand.  I especially find it difficult to express myself in text messages.  I'll send a text and worry that the person receiving the text will think I sound bossy or angry.  I may or may not have a small addiction to exclamation points...
When 'text speak' became a thing, I was still pretty young.  I never really got into it, though.  And now, as an adult, I am paying the price for missing out.  I don't understand what other people are trying to express.  Everyday, I find myself on Google.  Today, I googled 'WYD'.  I have seen 'WYD' multiple times on Facebook and I finally got around to looking it up.  'What you doing?'.  Well no wonder I could never figure out what it meant.  That's not even correct grammar!
What's the point of text speak anyways?  Does it really save you that much time?  What are you going to do with that extra 8 seconds you saved by typing 'brb' instead of 'be right back'?
Now, I'm not hatin' on anyone who uses texting short cuts.  No, I'm just expressing what I feel.  With real words.  Now, if you'll excuse me, I've 'got to go' assist my friend who is 'rolling on the floor laughing'.  I mean, who does that?