Anything in moderation is okay, but what I dislike about cellphones is the annoyance factor. I'm something of a film nerd and my biggest pet peeve (other than paying $10+ to see a movie at the theatre) is paying $10+ to see a movie at the theatre and having someone's cellphone go off in the middle of it!It's a matter of respect, not to mention there needs to be a stronger set of social customs behind it. Cellphones are still a new technology and so there isn't an established and recognized code of conduct/etiquette to accompany the usage.I, personally, like cellphones. In fact, I don't own a landline! My cell acts as my main line, and then long distance friends and family I talk to using Skype. My cellphone bill is cheaper than it cost me to have a landline and long distance plan. (Granted, I'm not a fan of talking on the phone, so perhaps this isn't a good argument factor for me!)I think that cellphones, when used reasonably, provide an essential security feature. It is good for use in case of emergencies: vehicle or other. Nothing is worse than being stranded on the side of the road with no way to call for help!