My 3G isn't slow at all. But I'm not in a big city like San Francisco or New York City. I watch YouTube, Netflix and Hulu on it. During the NBA season, I will watch NBA League Pass. A lot of other stuff to. Lots of radio apps. Spotify, Pandora, Shoutcast, A Online Radio, .Podcast, NPR's native app, FaceTime over 3G, etc.
I use anywhere from 2-10gb a month. And that's just from doing normal stuff with my iPhone.
I'll stay on my unlimited data plan for as long as I can and if AT&T takes it away, I'll go to whichever carrier offers an unlimited data plan, and if none of them do, I'll go to whoever offers the cheapest plan, and that won't be AT&T.
Threadstarter, you may only use 1gb a month now, but there are apps and features that we haven't even imagined yet, and in the very near future, a 2gb tiered plan isn't going to last people very long and they're going to have to either pay more to bump their monthly data allotment up, or not use their phone for the last bit of their billing cycle. Imagine if in the dial-up days, internet companies offered a 25gb tiered plan for cheaper and people jumped on it because they didn't think they would ever use 25gb a month anyways. Well, now it's 2011 and 25gb doesn't get you very far on the internet, and since unlimited wouldn't be available anymore, everyone would have to be watching what they do on the internet instead of paying it no mind. The mobile broadband companies don't want to make the same mistakes. They want to get us on tiered data plans right off the bat when the technology is in it's infancy so down the line when it becomes more advanced, we're used to tiered data instead of unlimited. This means the wireless companies can charge us a lot by offering us very little. They were smart.
It's interesting to me that people so willingly give up their unlimited data plans just to save 5gb a month. 2gb may last you now, but in the future when things get more advanced, 2gb a month isn't going to last very long. You're going to end up paying more for a tiered data plan that you would have if you just stayed on unlimited data.