I think my parents - Baby Boomers - have sent me perhaps 5 text messages each in the 5 years they've owned cell phones. My younger sister, however, routinely carries on multiple SMS conversations with her friends. In the course of an evening, she'll send two or three dozen messages, no sweat. Looking at my wireless bills, I range between 10 per day and 100 per day depending on the month and what I am up to.
Thirteen-year-old Morgan Pozgar, who typed "Supercalifragilisticexpialidocious" from Mary Poppins in just 15 seconds to win LG's recent National Texting Championship, sends 4,000 messages per month. That's 133 per day.
With the wireless network operators making unlimited messaging plans available, you can be sure people will continue to send more and more messages. According to the CTIA's web site, SMS usage in the U.S. increased 93% when comparing the last six months of 2005 to the last six months of 2006. In fact, SMS alone accounted for between 70% and 80% of all non-voice revenue for wireless network operators worldwide.
So, keep sending messages.