I think it's a shame that you can't see your way clear to hang in there, your wait hasn't been any longer than most of us, mine was 2 years 8 months, got frustrating a few times, but I've got the best game I've ever owned to show for it and couldn't be happier.
I realize that pre-ordering and having your money hanging out there isn't for everyone, and God knows reading Pinside will do nothing to ease your anxiety, but you've come this far and you will get a great game.