I will probably get one for my wife to use for emergencies, but that's about it. I'm one of those guys that doesn't like to talk on the phone much.
Cellphones are sure becoming common at schools, when the classes break the kids arms come up to their ears the instant they step out of the building - the way men used to put on their hats. It is interesting to watch the girls in particular as they stoll along yakking, oblivious to everything around them. Makes you wonder about the security implications for a young woman not aware of their surroundings, dangerous habit with all the sexual predators out there.
I don't see much long-term benefit from having a high frequency radio transmitter beaming energy into my skull at contact range on a frequent basis, but a very large % of the world population does so on a daily basis and it is supposedly safe.