Simply not true. There are enough of us who DO have the needed hardware to make it worth Epic's while bringing the games to market.
As for what we're excited about: playing the games. They will be fun. They will be fun at max detail. They will be fun at min detail. They will not require us to reboot, nor buy an expensive Vista license.
What else is there ever to get excited about with games, if not having fun?
Ok, well there's you and about 1000 other people because unless you think gaming @ < 60FPS is fun then you guys who spent $3000 on MacPros and coffeeshop MacBookPros are the only ones who are going to enjoy these games. And then the next generation of games that require even faster video cards will force MacPro users to spend another $400 on a special Mac version of some outdated video card.
I'm excited about the games. What I'm not excited about is the current line of "Macs". I put that in quotes because a "Mac" does not exist. There is no Macintosh there is only iMac, Mac Mini, MacBook(pro), and Mac Pro. There is no middle.