I must be an old-fart, because I cannot really understand the obsession with so much more/faster data for a handheld.
I have broadband at home (4 'puters), and at work. My wife finally got our family's first smartphone - Droid Charge (4g VZ). Honesty? The speed is irrelevant. It does not really matter if her facebook page comes up in 0.7 or 1.3 seconds!!!
Maybe it will make a difference for streaming Netflix (kids are 3.5 & 7); we upgraded just in time to get unlimited (and I added unlimited to my dumbphone - I intend to finally get a smartphone when the Nexus 4G rolls out).
However, stop and think about how much you're really paying for a "third" (home, work/school) internet connection. I'm not sure I'll use mine much - I'm usually home, at work, driving, or doing something (at Six Flags, etc). Most of my data will probably be the kids playing around in the car.
So, no, 4G doesn't *really* matter. I'm just not going to buy into yesterday's technology today