I hang on to it due to a well-grandfathered "wireless web" access that consts only half ($15/mo) that of a typical smartphone data plan and is allegedly unlimited. Which I didn't get to test 'cause YouTube modified its pages to require a version of Flash higher than my phone has. Ironically, YT still hosts 3GP video files which my phone can play--it just can't reach them through the Flash wrapper.
I strongly suspect VZW wants me off that phone--it recently offered me a 6GB data plan for the usual $30/mo extra if I upgrade to a smartphone. I'm not averse to having one--I'm eyeing the Galaxy Note 2 (or maybe 3, since it's supposed to ship in October)--I'm just making a point of being "cheap" and not wanting to pay $80+ a month as opposed to the $65 I am now.
I have a Galaxy S2 right now. It only has 3G, but I don't use it for data much anyway; and it does everything else just fine. My main complaint is with it still running a slightly buggy Gingerbread, but I can get that taken care of anyway.