I've wondered the same thing about many here, I mean it seems that a lot of guys bought there fx's new, & in my experience, people that can afford to & decide to buy a brand new car are usually the same kinds of people that once a car hits the 4-5 year mark there ready to get another new car...
I have my fx for about a year, slightly more... I think I'm going to keep her for another 2-3 years at least... can't really say that she's a 100% keeper yet, but only way I'd get rid of her would be for another fx at this point, I would def want to buy an fx50 when they come 3 years old or so... if I can keep the old one & get the new one too then who knows, maybe... but then what happens is I'll be so in love with the new one that I may not even want the old one either at that point... then there's always the chance that I wind up modding my fx so much that I wind up having to just keep her forever too, so, hard to really say....