Now I'm just a bit bitter about it
But, it can't be all that glamorous... after all, are you talking to a gamespy or major magazine writer, or some kid that runs his own gaming website that gets a total of 5 hits a day on (not naming names).
If you live in the area, or know someone in the area, or can expense the trip, hell yeah its worth the money... but honestly, if you spent all that money to travel to one, with those skyrocketed hotel prices that are charged... is it worth the money? Still, it'd be nice to go to one, but wouldn't it be a downer? Like last year if you got to play a demo of HL2 and it isn't out yet. Or if you played a cool demo for a game, but the actual game itself loses its luster after 5 minutes of play (Black&White). Eh, all in all I guess its better to just read the reviews of the good games complete with screencaps and such unless you are in the biz (grumble grumble).
Regardless of how they do in E3, I'll still be picking up HL2, Doom3, and Metroid Prime 2 when they come out.