Beth, I had thought about it before but decided I didn't want to make sure my only connection was always charged! Also, I prefer the reception on a land land much better than a cell phone connection. I use my cables bundle package with the unlimited long distance and I like that quite well.
One more thing I don't like about cell phones is that you can't prop them on your shoulder when you are doing something around the house. I know that sounds funny but when blabbing with my gf Julie, we can talk for an hour and holding the phone that long becomes a pain!