Exactly my thoughts. I'm located on Long Island and it's hit or miss. Speeds are nice, when you can find a consistent 3G connection. I always thought it would be on par with EvDO, but EvDO coverage is much more widespread. Now if only Verizon would have broke down and did a deal with Apple.
Not just the Internet. Voice quality is better, and you can have voice and data connections at the same time. That way, you don't miss a call, and don't have to hang up the phone to check something on the web when you don't have wifi.