None of us -- not even the guy who has attended GenCon multiple times -- are "hard core" in the sense you mean, of being Crunch Focused and wanting lots of new rules for new builds all the time. We're definitely more story oriented.
Yes they are, by my meaning. They buy books, they buy miniatures, they post on forums. A majority of my players do these things seldom, if at all.
My main game no one has any books for it except me.
Even without attempting a frequent game, getting the guys together once every few months is tough. We all have jobs, most of us have kids, someone is always moving or on a business trip, whatever.
Much easier when we were all in high school or college, or on summer break!
The best approach I've found is spisodic play and a quorum. Each game ends with the PCs returning to home base, making for simple explaination if someone can't make it. If X number of people show up on game day, its on. Makes cancellations easier to deal with. If you only game when everyone can make it, you'll play like 3 times a year.