Seek the opinion of one or two really good jaw surgeons before you give up. I've lost count of how many times I've been told wrong things by doctors.
I think this is something I need to consult orthodontists on, to be honest. As it pertains entirely to my teeth, and whether or not orthodontic decompensation is possible.
I was thinking of seeking out other opinions from orthodontists just because I feel my current ortho and his surgeon are very 'conservative' and pretty much think I'm insane. The surgeon said I was 'too good looking' for surgery, that nothing was wrong with my face, and at best a small sliding genio would be in order. The ortho constantly tells me similar things, that there is no need to have surgery, and shouldn't worry about it.
I think they'd have a heart attack if they knew about some of the work euro maxfac surgeons are performing purely for aesthetic reasons.