Do you work for the ATT Propaganda Ministry? What you are saying is marketing gobbledegook. Either you work for ATT or you've been brainwashed.
I am not a bandwidth hog. I have a 3G and have not used 1kb of 3G data since I've activated on April 30. I've been 100% WiFi. However, I know when I go to the beach in July I will be using 3G. That was going to be the first time I flipped the 3G switch on and then 30 days later I'd turn it off until the next time I needed 3G.
ATT changed the equation though. Now I'll turn on 3G on Sunday, a month earlier than anticipated. Since I'm paying for the 3G service I'm damn well going to use it. I'll become a bandwidth hog, not because that is who I am, but that is who ATT made me become by forcing me to continually buy data I don't really want.
Now if ATT said that I could "grandfather" into the unlimited plan w/o having to re-up every month I would not re-up every month. I'd use the 3G when I needed it, and only then. A lot less bandwidth used, and isn't that what ATT's goal is? That isn't the case though. So 3G wasting will now be a way of life until I can establish I'd never need more than 2GB in any given 30 days. My guess is I'm pretty typical. The $15 plan is a joke. That is about what I use on my iPhone -- but I don't watch movies on my phone. That is the difference.