Not mine. It seems about the same length (I never took a tape to it) as when I was in college. If anything, my flaccid cock has gotten thicker. Folks often comment on it (not that most of them know the comparison from Way Back When) when we're sleeping together. Since it used to go from abt 5" to 6" when it erected from soft, maybe it's just decided not to make the effort to shrink.
I don't have trouble getting hard, but unless there's continued physical stimulation, I'll go soft. Then hard again, soft...and so on.