I think that Tron: Legacy really sparked a comeback of arcades. I know that when I saw Flynn's arcade in the movie, then YT videos of Flynn's at Disneyland, the kid in me was crying with joy. I loved seeing fully functional arcade games, and tons of people enjoying them.
I agree that its more of an adult thing nowadays, because kids today would rather sit at home on the PS3/XBOX 360 than go out to a spot with friends and have fun.
Finances haven't come around to take the trip out to GG yet, but I am going to try and get that done by the end of the summer.