I hate talking on the phone.
When I was a teenager, I lived my entire life on the phone. I even worked a part-time job just to get money to pay for my own phone line, so that I could talk on it as long as I wanted without anyone kicking me off. I was a master of all forms of phone activity, including three-hour time-killers in which we covered nothing of substance, the non-emergency (except in gossip terms) emergency break-through, and some really exceptional prank calls.
Somewhere along the way, though, the phone and I had a break-up. Probably because I developed a raging hot love for email, which suits me on far more levels: I can talk to you whenever I feel like it, even at 2 a.m. I can answer you when it's most convenient, or after I've pondered my answer for a while, or during the commercial break from Law & Order. And I can talk to you without you knowing that I have a mouth stuffed full of tacos.
In a work context, I'm even more pro-email and anti-phone. Lots of conversations that would take five minutes in person take 30 seconds in email. If you email me instead of calling me, I can concentrate on other things without interruption and answer you when I'm at a good stopping point. I can write you back after hours, when I finally have time to focus on what you're saying.
Obviously, email isn't good for every situation. There are times when email is less efficient than talking by phone or in person, or where the situation simply requires a real conversation. (And god knows that I learn things in phone interviews that I wouldn't have realized from email, like that the candidate is crazy ... or, alternately, spectacular.)
But I have to think that in 10 years, we're going to be using the phone even less than we are right now. And I will not be sorry to see it go.