Can't speak for others, but I for one lost interest when the case appeared to go nowhere for years and thought police had lost any chance of solving it in the early stages, became slightly interested again when GJ was charged, took a peek again, and saw police were still on the same track chasing down rabbit holes so stepped back again, then took an interest again when it looked like we might finally get some resolution .. losing faith in that happening again now, and back to thinking police lost their chance of solving this in the very early stages.