Here's some food for thought: The evolution of speech as we know it has only been to more efficiently communicate what we want to say. As a caveman, it's a little hard to tell your friend about the big vicious whatever behind him when all you can do is point and shout "UNGH!" Eventually, they figured out enough of a language to be able to say "bad thing!" and suddenly survival rates went up.
Such has been the case through the eons. Now, one MIGHT say that the stilted, foppish speech that was popular in the 1700's is a step backwards, but it's important to remember that, at this point, there was no need to quickly point out the big vicious whatever. Thus, eloquence was made the big "thing".
Fast-forward to today. Now we have txting, a method of communication that is absolutely perfect for its intended purposes: Short messages sent over long distances.
Think about it, would you rather A) find your friend's number in your contact list, call him, wait for your lazy, lazy friend to pick up the phone, maybe missing you on your first try, only for you to say something like, "Hey, we're meeting at a different place instead of the other one." OR, option B) Send a txt that you know your friend will see as he heads out to meet you at the place. You can even send another txt not long after the first one, just to be certain your friend gets the message.
Now, given that you obviously chose option B, would you rather tap out the entire message, "Hey man, I know we were planning on meeting at George's Diner, but Josh started working at the Pinewood Restaurant, so we're going to go there, because Josh has an employee discount, and we're going to be there around 4. Remember, it's on North Avenue."
OR
"mtng @ pinwud rstrt on north ave @ 4"
Again, the second option only makes perfect sense, right? Even the slowest typer working with an old-school 10-digit keypad can tap that out in short order.
I hate the apparent degradation as much as the next person. I've learned to tolerate to, too and two, but saying "should of" instead of "should've" makes me want to falcon punch pregnant women.
On the other hand, these same illiterate jack-offs are also unwittingly help the written language on its path of evolution. I may not like it, but, hey, time marches on.
Ooooorrrrrr, maybe I'm just talking out of my ass. I'm not a big language guy. I just thought it was an interesting way of looking at the issue.