For professional and personal reasons, I must have a cellular phone. In addition to the business use, it allows friends and family to track me down. Rarely home by the phone, people who want to speak with me must call me where I am. In addition, I use my cell for ALL long distance calls.
Thirty years ago, a landline telephone was a necessity. Now, I think it is optional. When I lived in a NYC apartment, I didn’t bother to have one hooked up and never missed it. In my Connecticut house, I have a landline; however, I am considering dropping it. My only concern is emergencies.