brotherhood_of_LAN - 11:45 pm on Jul 18, 2012 (gmt 0)
I can think of a few reasons why
- a lot of the networks offer 'unlimited texts' and a set amount of voice minutes.
- you can text knowing you're not really interrupting the person receiving it, and they can reply when it's convenient, much like e-mail. they're basically less invasive... particularly for drivers.
- efficiency. you may just want to ask something like 'are you coming yet' rather than the hullabaloo of a call.