:-) For the same reason why I don't own any more F3's. Didn't like the "+-". Much prefer the "+0-" of the F2SB/AS and FM/FM2 series cameras.
That 15/5.6 QD-C lens is quite rare...
Oh, did add another off-topic Nikon SLR body (hey, free camera), and am about to swap my F4s for my nineteenth F4s. Found one that's in better condition and newer.