I'm still planning to get back into FM3 driving as the weather starts getting nasty here (midwest). But I doubt it will ever be at the level it was with FM2. I really enjoyed "the game within the game" and trying to post decent times in all the races and all the classes, the overall career scoreboard, etc. But FM3 is just too big. I just don't have the time to do it right, which takes a lot of incentive out of doing it at all.
Plus I have my personal fleet to look after:

Very nice. I sprung for a Focus ST a week ago so you shouldn't be leaving me behind quite as much now

Unlike you though, I didn't get one in garish orange

As for the relative lack of interest in FM3 vs. FM2, I think Detrick has pretty well summed it up. The only thing I can really add to that is that some of T10's community interaction has left a bit to be desired.