Well first of all, I can choose not to answer a phone call depending on who it is. When I receive a text, it forces you to open it no matter what. Either it displays the message automatically, or you are compelled to open it against your will.
Second, I know plenty of intelligent people who still send me idiotic texts. When I speak to them on the phone it's for a reason, with purpose. Example: A friend of mine is a grad student at MIT, all our conversations are stimulating, meaningful, and leave me pondering our discussion. The last text he sent me was, and I quote, "snak pliskin is kool srs eyepanch msn"
Third, as a professional line of communication texting is neither as efficient nor as secure as in-company email. As an aspiring producer, I send tons of emails a day that would be off in ther nether of someones phone if I were texting them. That and via email I can attach large files and documents for reference. I could call people as well for a more personable conversation, which is much more important, meaningful, and informative than if I were to simply text them.
I guess I'm saying that texting certainly has it's place in modern sopciety, but I don't consider it serious meaningful nor professional. It's instant gratification with that security blanket of anonymity, which I think is both a crutch and a cop-out in many situations.