[impure-aqua]

This is not really anything new, back in AIM and SMS messaging days, people would type "wuu2" or "whats up" to a friend, but to express the same idea in an email, you would probably be sending some variant of "What are you up to?"

There is massively different subtext between the two. Autocapitalization and autocorrect represents a limit on the subtextual bandwidth you can communicate along with a message. Restrictions on subtextual bandwith are not ideal when your generation relies on text-based communication for evermore intimate interactions - that "whats up" message might be the start of you asking someone out on a date, I don't want it formatted the same way as a message I would send my boss.