The newer smart phones support Group Text, where you can text multiple people at the same time, and reply to all by replying to the text. So even though my kids are grown up and far away, we can share pictures and have family chats in real time, something you can't do over the telephone....
Texts also document the conversation...many times on Judge Judy when the plaintiff and defendant get into a he-said-she-said, one will pull out their phone for the bailiff to bring to the judge showing the text messages.
I don't find texting impersonal, just reflective of how we communicate. Telephone etiquette that we learned as kids taught us that you don't just call somebody up and ask a question, then hang up when we get the answer....we have to make small talk to be polite. But that's exactly what you can do with a text.
If it's an emergency, and I can't answer the phone because I'm in a meeting, but I can return a text, or I can read a text that says "Call me it's an emergency" and so I step out of the meeting. Unfortunately nobody below the rank of CEO has a secretary anymore that you call and say "it's an emergency, please go get him out of the meeting."
If anything, texting has made communication more personal, since we can easily communicate more frequently and attach photos and web references to our notes.
I spoke to an old friend for 2 1/2 hours on the phone last weekend, just catching up.
Unfortunately people look at texting and think that all those texts would have been phone calls back in the day. The truth is, 95% of those texts wouldn't have been anything...we wouldn't have been able to reach that person at all.