I went without a cell phone for a few months and did not miss it too much, but it is convenient to be able to call while traveling without needing to find a pay phone, which are very scarce these days, because everyone else has a cell phone and pay phones don't get used any more. My car radio has Bluetooth built-in with a nice voice activated contact list and dialer which makes calling while driving a snap.
I am very suprised there are so many people here that are against using cell phones altogether. They can be annoying at times, but their usefulness far outweighs their annoyance factors.
I have an iPhone3GS that is jail-broken and unlocked so I can use it on any compatible carrier's network and just switch sim cards when traveling to different countries, instead of paying expensive roaming charges. I don't have a contract and use the cheapest month-to-month plan that T-Mobile offers. I like the user interface that the iPhone offers and the way the touch screen works so smoothly, plus I like having something to entertain me while I am waiting for a doctor's appointment, or at the DMV, or other similar long waits.
I might even one day install an Amiga emulator on my iPhone to see how well it works.
