I have never once written it in my life and never will. And I have never used text speak in text messages. Every word has always been fully and correctly written. The youngsters in my life know to do this in return because they know how much it irritates me and they'll pay the price at Christmas and birthdays.
I dont mind seeing shortened versions like that, what I cant stand is people using 'text speak' on internet forums - you have a full keyboard in front of you, use it.