I text all the time for several reasons.

1. I get 1 bar of reception in my house, so I cannot take a call, but I can send & receive text messages.
2. When I'm at work & need to ask my freinds something, while they are at work, I can send aa text to them & they will reply when they are free.. if the convo needs more detail, then we call.
3. I have unlimited texting cause I cannot afford long distance, so I text my sister so she can call me. Or I text friends, to have a quick chat as not all of them use MSN or have a computer & neither of us can afford long distance.