I am on craigslist a lot. Mostly selling. I prefer texting. But to me there is a clear trend in the types of folks who are comfortable with it.
The younger the person, the more comfortable they are texting since they text their friends all day anyway.
Older folks are not used to texting as much, and they also can't see their screens as easily and can't type as quickly on the smartphone keyboard, so they want to call instead.
I can see a clear trend as you go through the ages from folks in their teens, into the 20s, 30s, and older. In my experience, folks in their late 40s and up are much less comfortable with texting.