The first couple of days after making the purchase were tough. You see I was among that small percentage of people whose activation experience was less than stellar. In my case this was because my old phone was of a different type (TDMA instead of GSM) and my old service plan didn't qualify for the iPhone (no surprise). So, it wasn't until more than 48 hours after I first attempted to activate it that the activation actually took effect, and a few more hours before I discovered that it had done so, the morning of the 4th, investing new personal meaning in "Independence Day".
Since then I've had a glimpse of a long-predicted aspect of the future that's finally arriving around us, one in which ubiquitous telecommunications becomes the basis for effortless and effectively continuous interconnection between people, regardless of where they might be at the time. So what if the content of the communication thus enabled is mostly twitter! People twitter, especially with lifelong friends; it's part of what keeps us connected, sharing the little events of our lives, day by day, moment by moment.
While it's tempting to invoke the concept "noosphere" in talking about this, I'd say we've some digging ourselves out of a hole to do first, that hole being the disruption of community-forming relationships brought about by the mobile society. We've become too accustomed to treating the people in our lives as though they were interchangeable, an endless sequence of undifferentiated identities temporarily associated with roles with which we interact, not really as individuals at all.
Does the iPhone magically fix all that? Of course not, but it's a big step in a helpful direction, making it easier for each of us to stay in touch with the people with whom our lives are intertwined, reducing the effort involved in keeping track of and making use of contact information to practically nothing.