Robin,
Cell phones for kids can certainly help make your life better, I have two daughters 14, and 16 and they've had phones since they were 12, and 14, and they're really helped with all the weird scheduling. My husband and I both work full time although I have an extremely flexible job and the kids attend a private school which is 30 minutes away and has no transportation for excurriclar activities so mom's a full-time taxi. Cell phones make it so much easier to stay in touch with the kids and handle last minute plan changes. My kids have been really responsible about using them also. Welcome to the 21st Century! And you have my sympathy on the technology I have to ask my daughter whenever I need to do something new on the phone.