I don't think I've typed out 'lol' in a message since circa 2005, on online chat in some dark corner of the web. Culture bubbles are an incredible thing.
I don't usually text in English so my style is definitely different, but I wonder if I may be living in the Apple Dimension (despite my last Apple device being an iPod Touch from 10 years ago and a MacBook Air from the same time that I bought used to try to install Linux on it): I do end every one of my texts with grammatically correct punctuation, never use "lol" or other abbreviations, and typically write in a very clean, sometimes too verbose, style. I wonder if something up with "us". Maybe a new pathology name ought to be coined.
Seriously though, I don't mind people who don't as long as its decipherable, but I find it odd giving punctuation (or lack of it) some value judgement.