Ditto. Still have my 24-105, too...I've gone so far as to shoot product pics of it and dig out the original box, although I haven't actually listed it yet.
Out of curiosity, how much did you shoot the 24-105 at 105, and how're you dealing with the shorter focal length?
I’ll observe that there's a bigger difference between 70 and 105 than there is between 85 and 100, the two most popular primes in that range...and that most people used to shooting a 100 chose it over an 85 for a reason, even if you can compensate....
I haven't missed the 70-105mm range, yet. For many scenes, a step closer does the trick. Where I might actually miss the 24-105 (and probably the main reason I haven't sold it) is 'studio' portraits (lighting + backdrop). I do that at f/9-10, the 24-105's IQ is excellent there, and the 105mm means decently tight portraits whereas 70mm doesn't work (too close, wrong perspective).